Skip to content
Calcapedia
Print as
Number of problems

In the print window, choose “Save as PDF” as the printer (or print it on paper). Seed 1 rebuilds this exact sheet.

Showing 10 problems, seed 1.

Pension worksheet

Grades 7–8 · CCSS 7.RP.A.3

Solve each problem and show your work. Round answers to 2 decimal places where needed.

  1. Problem 1.
    • Years of service: 26
    • Pension multiplier: 1.8%
    • Final average salary: $90,000
    • Age when payments start: 50
    • Lump sum offered (optional): $400,000
    • Yearly return on the lump sum: 3%
    • Age to plan to: 95

    Find: Monthly pension

  2. Problem 2.
    • Years of service: 36
    • Pension multiplier: 1.8%
    • Final average salary: $70,000
    • Age when payments start: 50
    • Lump sum offered (optional): $410,000
    • Yearly return on the lump sum: 5%
    • Age to plan to: 90

    Find: Monthly pension

  3. Problem 3.
    • Years of service: 45
    • Pension multiplier: 1.7%
    • Final average salary: $95,000
    • Age when payments start: 75
    • Lump sum offered (optional): $620,000
    • Yearly return on the lump sum: 4%
    • Age to plan to: 98

    Find: Monthly pension

  4. Problem 4.
    • Years of service: 35
    • Pension multiplier: 1.5%
    • Final average salary: $80,000
    • Age when payments start: 45
    • Lump sum offered (optional): $475,000
    • Yearly return on the lump sum: 5%
    • Age to plan to: 100

    Find: Monthly pension

  5. Problem 5.
    • Years of service: 28
    • Pension multiplier: 1.4%
    • Final average salary: $90,000
    • Age when payments start: 56
    • Lump sum offered (optional): $600,000
    • Yearly return on the lump sum: 5%
    • Age to plan to: 70

    Find: Monthly pension

  6. Problem 6.
    • Years of service: 30
    • Pension multiplier: 1.4%
    • Final average salary: $75,000
    • Age when payments start: 68
    • Lump sum offered (optional): $500,000
    • Yearly return on the lump sum: 4%
    • Age to plan to: 70

    Find: Monthly pension

  7. Problem 7.
    • Years of service: 28
    • Pension multiplier: 1.5%
    • Final average salary: $60,000
    • Age when payments start: 55
    • Lump sum offered (optional): $560,000
    • Yearly return on the lump sum: 4%
    • Age to plan to: 95

    Find: Monthly pension

  8. Problem 8.
    • Years of service: 38
    • Pension multiplier: 1.8%
    • Final average salary: $75,000
    • Age when payments start: 45
    • Lump sum offered (optional): $400,000
    • Yearly return on the lump sum: 6%
    • Age to plan to: 80

    Find: Monthly pension

  9. Problem 9.
    • Years of service: 33
    • Pension multiplier: 1.5%
    • Final average salary: $100,000
    • Age when payments start: 66
    • Lump sum offered (optional): $550,000
    • Yearly return on the lump sum: 5%
    • Age to plan to: 80

    Find: Monthly pension

  10. Problem 10.
    • Years of service: 36
    • Pension multiplier: 1.1%
    • Final average salary: $90,000
    • Age when payments start: 65
    • Lump sum offered (optional): $650,000
    • Yearly return on the lump sum: 5%
    • Age to plan to: 120

    Find: Monthly pension

Answer key: Pension worksheet

  1. 1. Monthly pension: $3,510.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      26×1.8%=46.8%
    2. Take that share of your final average salary to get your pension for a year

      46.8%×$90,000.00=$42,120.00
    3. Divide by 12 to get your monthly payment

      $42,120.0012=$3,510.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $400,000.00$3,510.00=113.96 payments
    5. Round up to 114 whole months and add them to your starting age. This is the plain break-even age

      50+11412=59.5 years old
    6. Turn the 3% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.2466%
    7. Suppose you invest the lump sum and pay yourself $3,510.00 a month. The money lasts 134 months. After that, the pension is ahead

      50+13412=61.2 years old
    8. Total the payments from age 50 to age 95

      $3,510.00×540=$1,895,400.00
    9. Find what's left of the invested lump sum at age 95, if you paid yourself the same amount

      left at that age=$0.00
  2. 2. Monthly pension: $3,780.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      36×1.8%=64.8%
    2. Take that share of your final average salary to get your pension for a year

      64.8%×$70,000.00=$45,360.00
    3. Divide by 12 to get your monthly payment

      $45,360.0012=$3,780.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $410,000.00$3,780.00=108.47 payments
    5. Round up to 109 whole months and add them to your starting age. This is the plain break-even age

      50+10912=59.1 years old
    6. Turn the 5% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4074%
    7. Suppose you invest the lump sum and pay yourself $3,780.00 a month. The money lasts 144 months. After that, the pension is ahead

      50+14412=62 years old
    8. Total the payments from age 50 to age 90

      $3,780.00×480=$1,814,400.00
    9. Find what's left of the invested lump sum at age 90, if you paid yourself the same amount

      left at that age=$0.00
  3. 3. Monthly pension: $6,056.25

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      45×1.7%=76.5%
    2. Take that share of your final average salary to get your pension for a year

      76.5%×$95,000.00=$72,675.00
    3. Divide by 12 to get your monthly payment

      $72,675.0012=$6,056.25
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $620,000.00$6,056.25=102.37 payments
    5. Round up to 103 whole months and add them to your starting age. This is the plain break-even age

      75+10312=83.6 years old
    6. Turn the 4% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.3274%
    7. Suppose you invest the lump sum and pay yourself $6,056.25 a month. The money lasts 125 months. After that, the pension is ahead

      75+12512=85.4 years old
    8. Total the payments from age 75 to age 98

      $6,056.25×276=$1,671,525.00
    9. Find what's left of the invested lump sum at age 98, if you paid yourself the same amount

      left at that age=$0.00
  4. 4. Monthly pension: $3,500.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      35×1.5%=52.5%
    2. Take that share of your final average salary to get your pension for a year

      52.5%×$80,000.00=$42,000.00
    3. Divide by 12 to get your monthly payment

      $42,000.0012=$3,500.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $475,000.00$3,500.00=135.71 payments
    5. Round up to 136 whole months and add them to your starting age. This is the plain break-even age

      45+13612=56.3 years old
    6. Turn the 5% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4074%
    7. Suppose you invest the lump sum and pay yourself $3,500.00 a month. The money lasts 198 months. After that, the pension is ahead

      45+19812=61.5 years old
    8. Total the payments from age 45 to age 100

      $3,500.00×660=$2,310,000.00
    9. Find what's left of the invested lump sum at age 100, if you paid yourself the same amount

      left at that age=$0.00
  5. 5. Monthly pension: $2,940.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      28×1.4%=39.2%
    2. Take that share of your final average salary to get your pension for a year

      39.2%×$90,000.00=$35,280.00
    3. Divide by 12 to get your monthly payment

      $35,280.0012=$2,940.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $600,000.00$2,940.00=204.08 payments
    5. Round up to 205 whole months and add them to your starting age. This is the plain break-even age

      56+20512=73.1 years old
    6. Turn the 5% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4074%
    7. Suppose you invest the lump sum and pay yourself $2,940.00 a month. The money lasts 438 months. After that, the pension is ahead

      56+43812=92.5 years old
    8. Total the payments from age 56 to age 70

      $2,940.00×168=$493,920.00
    9. Find what's left of the invested lump sum at age 70, if you paid yourself the same amount

      left at that age=$480,813.31
  6. 6. Monthly pension: $2,625.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      30×1.4%=42%
    2. Take that share of your final average salary to get your pension for a year

      42%×$75,000.00=$31,500.00
    3. Divide by 12 to get your monthly payment

      $31,500.0012=$2,625.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $500,000.00$2,625.00=190.48 payments
    5. Round up to 191 whole months and add them to your starting age. This is the plain break-even age

      68+19112=83.9 years old
    6. Turn the 4% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.3274%
    7. Suppose you invest the lump sum and pay yourself $2,625.00 a month. The money lasts 299 months. After that, the pension is ahead

      68+29912=92.9 years old
    8. Total the payments from age 68 to age 70

      $2,625.00×24=$63,000.00
    9. Find what's left of the invested lump sum at age 70, if you paid yourself the same amount

      left at that age=$475,370.24
  7. 7. Monthly pension: $2,100.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      28×1.5%=42%
    2. Take that share of your final average salary to get your pension for a year

      42%×$60,000.00=$25,200.00
    3. Divide by 12 to get your monthly payment

      $25,200.0012=$2,100.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $560,000.00$2,100.00=266.67 payments
    5. Round up to 267 whole months and add them to your starting age. This is the plain break-even age

      55+26712=77.3 years old
    6. Turn the 4% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.3274%
    7. Suppose you invest the lump sum and pay yourself $2,100.00 a month. The money lasts 632 months. After that, the pension is ahead

      55+63212=107.7 years old
    8. Total the payments from age 55 to age 95

      $2,100.00×480=$1,008,000.00
    9. Find what's left of the invested lump sum at age 95, if you paid yourself the same amount

      left at that age=$250,337.65
  8. 8. Monthly pension: $4,275.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      38×1.8%=68.4%
    2. Take that share of your final average salary to get your pension for a year

      68.4%×$75,000.00=$51,300.00
    3. Divide by 12 to get your monthly payment

      $51,300.0012=$4,275.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $400,000.00$4,275.00=93.57 payments
    5. Round up to 94 whole months and add them to your starting age. This is the plain break-even age

      45+9412=52.8 years old
    6. Turn the 6% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4868%
    7. Suppose you invest the lump sum and pay yourself $4,275.00 a month. The money lasts 126 months. After that, the pension is ahead

      45+12612=55.5 years old
    8. Total the payments from age 45 to age 80

      $4,275.00×420=$1,795,500.00
    9. Find what's left of the invested lump sum at age 80, if you paid yourself the same amount

      left at that age=$0.00
  9. 9. Monthly pension: $4,125.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      33×1.5%=49.5%
    2. Take that share of your final average salary to get your pension for a year

      49.5%×$100,000.00=$49,500.00
    3. Divide by 12 to get your monthly payment

      $49,500.0012=$4,125.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $550,000.00$4,125.00=133.33 payments
    5. Round up to 134 whole months and add them to your starting age. This is the plain break-even age

      66+13412=77.2 years old
    6. Turn the 5% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4074%
    7. Suppose you invest the lump sum and pay yourself $4,125.00 a month. The money lasts 193 months. After that, the pension is ahead

      66+19312=82.1 years old
    8. Total the payments from age 66 to age 80

      $4,125.00×168=$693,000.00
    9. Find what's left of the invested lump sum at age 80, if you paid yourself the same amount

      left at that age=$96,793.74
  10. 10. Monthly pension: $2,970.00

    1. Multiply your years of service by the multiplier. This is the share of your salary the pension replaces

      36×1.1%=39.6%
    2. Take that share of your final average salary to get your pension for a year

      39.6%×$90,000.00=$35,640.00
    3. Divide by 12 to get your monthly payment

      $35,640.0012=$2,970.00
    4. Divide the lump sum by the monthly payment. That's how many payments it takes to match it, with no investing

      $650,000.00$2,970.00=218.86 payments
    5. Round up to 219 whole months and add them to your starting age. This is the plain break-even age

      65+21912=83.3 years old
    6. Turn the 5% yearly return into a monthly rate, because the payments are monthly

      monthly rate=0.4074%
    7. Suppose you invest the lump sum and pay yourself $2,970.00 a month. The money lasts 547 months. After that, the pension is ahead

      65+54712=110.6 years old
    8. Total the payments from age 65 to age 120

      $2,970.00×660=$1,960,200.00
    9. Find what's left of the invested lump sum at age 120, if you paid yourself the same amount

      left at that age=$0.00