Decimals Worksheets

Add, subtract, multiply and divide decimal numbers with one or two decimal places. Grades 4–6.

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What these worksheets practise

Decimals are another way to write fractions with denominators of 10, 100 and so on: 0.7=7100.7 = \tfrac{7}{10} and 0.25=251000.25 = \tfrac{25}{100}. Calculating with them is whole-number arithmetic plus one extra skill: keeping track of the decimal point.

Choose one operation per worksheet and one or two decimal places.

  • Addition and subtraction — two decimal numbers; subtraction answers are never negative.
  • Multiplication — a decimal times a whole number from 2 to 9.
  • Division — a decimal divided by a decimal, with a whole-number answer from 2 to 9.

Worked examples

Addition: 3.4+5.83.4 + 5.8

Line up the decimal points and add as with whole numbers: 34+58=9234 + 58 = 92 tenths, so the answer is 9.29.2.

Subtraction: 7.2−2.97.2 - 2.9

With the points lined up, borrow as usual: 72−29=4372 - 29 = 43 tenths, so 7.2−2.9=4.37.2 - 2.9 = 4.3.

Multiplication: 6.47×86.47 \times 8

Multiply without the point: 647×8=5176647 \times 8 = 5176. The factor 6.47 has two decimal places, so the answer has two as well: 51.7651.76.

Division: 25.2÷4.225.2 \div 4.2

Move the decimal point one place to the right in both numbers so the divisor is a whole number: 252÷42=6252 \div 42 = 6.

Check your answers

Estimate with whole numbers. 6.47×86.47 \times 8 is about 6×8=486 \times 8 = 48, so 51.76 is reasonable and 517.6 is not. For division, multiply back: 6×4.2=25.26 \times 4.2 = 25.2.

Common mistakes

  • Lining up the last digits instead of the decimal points. In 4.5+1.254.5 + 1.25, the 5 tenths go under the 2 tenths: 4.50+1.25=5.754.50 + 1.25 = 5.75.
  • Putting the point in the wrong place when multiplying. Count the decimal places in the factors; 6.47×86.47 \times 8 needs two.
  • Moving the point in only one number when dividing. Both numbers move the same number of places, or the answer changes: 252÷4.2=60252 \div 4.2 = 60, not 6.
  • Borrowing across the decimal point. The point does not change how borrowing works; 7.2−2.97.2 - 2.9 is 4.3, not 5.7.

Sample problems

These problems come from the same generator as the worksheet above. Press Generate for a fresh set.

Addition

  1. 1.4+2.6=1.4 + 2.6 =
  2. 9.5+3.9=9.5 + 3.9 =

Subtraction

  1. 7.7−1.2=7.7 - 1.2 =
  2. 5.4−2.2=5.4 - 2.2 =

Multiplication

  1. 9.31×6=9.31 \times 6 =
  2. 8.94×4=8.94 \times 4 =

Division

  1. 56.8÷7.1=56.8 \div 7.1 =
  2. 36.4÷9.1=36.4 \div 9.1 =
Show answers
  1. 4
  2. 13.4
  3. 6.5
  4. 3.2
  5. 55.86
  6. 35.76
  7. 8
  8. 4

Tips for teachers and parents

  • Money is the most familiar decimal: $3.40+$5.80\$3.40 + \$5.80 makes the addition example concrete.
  • Grid paper helps students keep decimal points in one column on addition and subtraction worksheets.
  • Estimating before calculating catches most decimal-point errors in multiplication and division.

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