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Adding and Subtracting Decimals

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  • What is the value of the 5 in 12345.6789?
    5 ones, or 5
  • 658.61 - 33.394
    625.216
  • True or False - You can add zeros before the decimal without changing the value of the number.
    FALSE! 50.6 =/= 5.6
  • 40.724 + 37.629
    78.353
  • What is the value of the 8 in 12345.6789?
    8 thousandths, or 8/1000
  • What is the value of the 9 in 12345.6789?
    9 ten-thousandths, or 9/10,000
  • 64.418 + 22.843
    87.261
  • 48.036 + 890.68
    938.716
  • 87.327 + 351.620
    438.947
  • True or False - When adding and subtracting decimals, line up the digits on the right-hand side of the number.
    FALSE! Line up the decimal point, no matter how many places after the decimal each number has.
  • What is the value of the 6 in 12345.6789?
    6 tenths, or 6/10
  • 139.630 - 73.335
    66.295
  • 90.643 - 36.427
    54.216
  • What is the value of the 7 in 12345.6789?
    7 hundredths, or 7/100
  • True of False - You can add zeros after a decimal without changing the value of the number.
    True! 5.6 = 5.60000
  • 59.756 - 36.367
    23.389
  • 531.17 + 907.28
    1438.45
  • 911.84 - 803.26
    108.58
  • 435.69 + 258.11
    693.80
  • 299.94 + 633.12
    933.06
  • What is the value of the 4 in 12345.6789?
    4 tens, or 40
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