Decimal Problems With Answers
Practice decimal problems with answers - adding, subtracting, multiplying, dividing, rounding, and word problems.
Print options
Adding and Subtracting
| # | Problem |
|---|---|
| 1 | 3.5 + 2.7 |
| 2 | 12.45 + 7.8 |
| 3 | 9.6 − 4.85 |
| 4 | 20 − 13.6 |
| 5 | 0.75 + 0.4 |
Multiplying and Dividing
| # | Problem |
|---|---|
| 6 | 2.5 × 4 |
| 7 | 1.2 × 0.5 |
| 8 | 6.4 ÷ 2 |
| 9 | 0.9 × 0.3 |
| 10 | 7.5 ÷ 0.5 |
Rounding and Comparing
| # | Problem |
|---|---|
| 11 | Round 4.678 to the nearest tenth. |
| 12 | Round 12.345 to the nearest hundredth. |
| 13 | Which is larger, 0.6 or 0.59? |
| 14 | Write 0.4 as a fraction in simplest form. |
| 15 | Round 9.96 to the nearest tenth. |
Word Problems
| # | Problem |
|---|---|
| 16 | A pencil costs 1.25 and an eraser costs 0.80. What is the total? |
| 17 | You buy 3 notebooks at 2.50 each. What is the total cost? |
| 18 | A board is 2.4 m long. You cut off 0.85 m. How much remains? |
| 19 | A runner runs 5.5 km on Monday and 4.75 km on Tuesday. How far in total? |
| 20 | Share 9.6 litres equally among 4 bottles. How much in each? |
Answer Key
| # | Answer |
|---|---|
| 1 | 6.2 |
| 2 | 20.25 |
| 3 | 4.75 |
| 4 | 6.4 |
| 5 | 1.15 |
| 6 | 10 |
| 7 | 0.6 |
| 8 | 3.2 |
| 9 | 0.27 |
| 10 | 15 |
| 11 | 4.7 |
| 12 | 12.35 |
| 13 | 0.6 |
| 14 | 2/5 |
| 15 | 10.0 |
| 16 | 2.05 |
| 17 | 7.50 |
| 18 | 1.55 m |
| 19 | 10.25 km |
| 20 | 2.4 litres |
Step-by-Step Solutions
Problem 3: line up the points - 9.60 − 4.85 = 4.75.
Problem 12: to round 12.345 to the nearest hundredth, look at the third decimal (5), which rounds the hundredths digit up: 12.35.
Problem 15: rounding 9.96 to the nearest tenth, the hundredths digit (6) rounds the tenths up, and 9.9 becomes 10.0.
Problem 18: 2.40 − 0.85 = 1.55 metres.