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.

A practice path through the settings

  1. Addition and subtraction with one decimal place. Numbers from 1.1 to 9.9, where lining up the decimal points is the whole skill.
  2. The same with two decimal places. Hundredths, with numbers from 1.01 to 9.99.
  3. Multiplication. A decimal times a whole number from 2 to 9: count the decimal places in the factor to place the point in the answer.
  4. Division. Every answer is a whole number from 2 to 9, so the focus stays on moving the decimal point in both numbers.

Estimating each answer before calculating it, for example 6.47×8≈6×86.47 \times 8 \approx 6 \times 8, catches most decimal-point mistakes at every step.

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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