Four Operations with Decimals
Add Decimals
Add these decimal numbers. Line up the decimal points!
3.5 + 2.4 = ___
7.8 + 1.6 = ___
12.35 + 4.25 = ___
0.75 + 0.50 = ___
More Decimal Addition
Add these decimals carefully.
4.6 + 3.9 = ___
15.25 + 8.75 = ___
0.8 + 0.35 = ___
22.5 + 7.55 = ___
Quick Decimal Addition
Circle the correct answer.
2.5 + 3.5 = ?
0.7 + 0.8 = ?
4.25 + 1.75 = ?
10.6 + 3.4 = ?
Subtract Decimals
Subtract these decimal numbers carefully.
8.6 − 3.2 = ___
15.4 − 7.8 = ___
10.00 − 4.35 = ___
6.50 − 2.75 = ___
More Decimal Subtraction
Subtract these decimals. Remember to line up the decimal points.
9.2 − 4.7 = ___
20.00 − 8.65 = ___
5.3 − 2.85 = ___
14.50 − 6.75 = ___
Quick Decimal Subtraction
Circle the correct answer.
7.5 − 2.5 = ?
10.0 − 3.6 = ?
5.25 − 1.25 = ?
8.1 − 0.9 = ?
Match Decimal Sums and Differences
Draw a line to match each calculation to its answer.
Decimal Bonds to 10
Find the missing decimal that makes each pair add to 10.
Decimal Bonds to 1
Find the decimal that makes each pair add to 1.
0.3 + ___ = 1
0.75 + ___ = 1
0.45 + ___ = 1
0.08 + ___ = 1
Multiply Decimals by Whole Numbers
Multiply these decimal numbers.
2.5 × 4 = ___
3.2 × 5 = ___
6.5 × 3 = ___
0.8 × 7 = ___
Multiply Decimals by Decimals
Multiply these decimal numbers. Count the decimal places in your answer.
1.5 × 0.4 = ___
12.5 × 0.2 = ___
3.5 × 0.6 = ___
2.4 × 1.5 = ___
Estimate the Product
Circle the best estimate for each multiplication.
4.9 × 3 ≈ ?
6.1 × 5 ≈ ?
2.8 × 7 ≈ ?
0.5 × 8 ≈ ?
More Estimates
Circle the best estimate for each calculation.
9.8 × 2 ≈ ?
3.1 × 4 ≈ ?
7.2 × 6 ≈ ?
1.9 × 9 ≈ ?
Multiply by 10, 100, 1000
Multiply each decimal by the given power of 10.
3.45 × 10 = ___
0.72 × 100 = ___
1.5 × 1000 = ___
0.006 × 100 = ___
Divide Decimals by Whole Numbers
Divide these decimal numbers.
8.4 ÷ 2 = ___
15.6 ÷ 4 = ___
9.3 ÷ 3 = ___
24.5 ÷ 5 = ___
Divide Decimals by Decimals
Divide these decimal numbers.
7.2 ÷ 0.8 = ___
10.5 ÷ 0.5 = ___
6.3 ÷ 0.9 = ___
4.8 ÷ 0.4 = ___
Divide by 10, 100, 1000
Divide each number by the given power of 10.
45.6 ÷ 10 = ___
230 ÷ 100 = ___
8,500 ÷ 1000 = ___
7.2 ÷ 10 = ___
Match Operations to Answers
Draw a line to match each calculation to its answer.
Choose the Operation
Circle the operation needed to solve each problem.
You buy 3 items at $4.50 each. Total cost?
You share $15.60 equally among 4 people.
You have $20 and spend $8.75.
You earn $12.50 per hour for 6 hours.
Decimal Word Problems
Solve each word problem. Show your working.
A book costs $14.95. You pay with a $20 note. How much change do you receive?
You buy 3 pencils at $1.35 each. What is the total cost?
A 2.5 kg bag of oranges costs $6.25. What is the price per kilogram?
You walk 1.8 km in the morning and 2.45 km in the afternoon. How far did you walk?
Mixed Operations Challenge
Use the correct operation to solve each problem.
3.5 × 4 + 2.6 = ___
20 − 3 × 4.5 = ___
15.6 ÷ 3 + 2.8 = ___
8.4 ÷ 2 − 1.5 = ___
Home Activity: Decimal Shopping
Practise decimal operations with real-life prices!
- 1Find 3 items in a catalogue. Add their prices together using decimal addition.
- 2If something costs $12.50 and you pay with a $20 note, how much change do you get?
- 3If 1 kg of apples costs $3.50, how much would 2.5 kg cost?
- 4Share $15.60 equally between 4 people. How much does each person get?
- 5Calculate the total cost of your family's grocery shop using decimal addition.
Decimal Sequences
Fill in the missing decimal in each pattern.
Rounding Decimals
Round each decimal to the nearest whole number, tenth, and hundredth.
3.456: nearest whole = ___, nearest tenth = ___, nearest hundredth = ___
12.785: nearest whole = ___, nearest tenth = ___, nearest hundredth = ___
0.549: nearest whole = ___, nearest tenth = ___, nearest hundredth = ___
Decimal Place Values
Circle the digit in the specified place.
In 4.758, the digit in the hundredths place is:
In 12.306, the digit in the tenths place is:
In 0.0924, the digit in the thousandths place is:
In 7.85, the digit with the highest place value is:
Match Decimal to Written Form
Draw a line to match each decimal to its word form.
Comparing and Ordering Decimals
Order each set of decimals from smallest to largest.
3.7, 3.07, 3.70, 3.007 → ___
0.5, 0.45, 0.54, 0.405 → ___
12.3, 12.03, 12.30, 12.003 → ___
Decimal Addition with Carrying
Add these decimals carefully. Show your working.
4.67 + 8.95 = ___
12.87 + 9.46 = ___
0.456 + 0.789 = ___
35.07 + 16.98 = ___
Decimal Subtraction with Borrowing
Subtract these decimals. Show your working.
12.34 − 7.89 = ___
50.00 − 23.47 = ___
3.01 − 1.78 = ___
100.00 − 46.95 = ___
Decimal Bonds to 1
Find the missing decimal that makes each pair add to 1.
Decimal Bonds Practice
Find the missing decimal.
0.47 + ___ = 1
0.629 + ___ = 1
___ + 0.082 = 1
1.3 + ___ = 2
Multiplying Decimals — Column Method
Use the column method to multiply each pair of decimals.
3.8 × 4.2 = ___
6.5 × 2.4 = ___
1.25 × 3.6 = ___
7.4 × 0.35 = ___
Decimal Division — Spot the Error
Circle the incorrect answer and explain.
12.6 ÷ 3 = ?
8.4 ÷ 0.4 = ?
9.6 ÷ 0.08 = ?
5.5 ÷ 0.5 = ?
Sort Decimals by Size
Sort each group of decimals from smallest to largest.
Decimal Measures
Four athletes recorded their best long jump distances. Answer the questions.
| Alex | |
| Beth | |
| Chris | |
| Demi |
What is the range of their distances (each star = 0.5 m)?
What is the mean distance?
What is the total combined distance in metres?
Measuring to the Nearest 0.5 cm
Count how many objects fall in each length range.
| Item | Tally | Total |
|---|---|---|
0 − 2.5 cm | ||
2.5 − 5.0 cm | ||
5.0 − 7.5 cm | ||
7.5 − 10.0 cm |
Mixed Decimal Operations
Use the correct order of operations to solve each expression.
2.5 + 3.4 × 2 = ___
(4.8 − 1.2) × 5 = ___
10.5 ÷ 3 + 2.7 = ___
6.4 × 2 − 8.9 = ___
Financial Decimal Problems
Solve these real-world money problems with decimals.
You earn $14.75 per hour. Work 8.5 hours. Total pay = $___
3 items cost $5.49, $12.85, and $3.66. Total = $___. Change from $25 = $___
Split $47.70 equally between 6 people. Each pays $___
Decimal Estimation Strategies
Estimate each answer, then calculate exactly.
Estimate: 4.97 × 8 ≈ ___. Exact: ___
Estimate: 23.4 ÷ 3.9 ≈ ___. Exact: ___
Estimate: 7.82 + 4.96 + 2.14 ≈ ___. Exact: ___
Decimals and Fractions Connection
Write each as a decimal AND a fraction in simplest form.
35% → decimal: ___, fraction: ___
0.625 → fraction: ___, percentage: ___
7/8 → decimal: ___, percentage: ___
0.04 → fraction: ___, percentage: ___
Decimal Problem Solving Challenge
Solve these multi-step decimal problems.
You buy 2.5 kg of apples at $3.20/kg and 1.8 kg of oranges at $2.50/kg. Total cost = $___
A tank holds 45.6 L. It is already 0.75 full. How many more litres can you add? ___
A runner's times (in seconds) are 12.4, 11.9, 12.1, 11.8. Mean time = ___
Match Decimal Operations to Answers
Draw a line to match each calculation to its correct answer.
Decimal Reasoning Questions
Explain your reasoning for each answer.
Is 0.3² = 0.9? Explain: ___
Why is 3.0 × 0.1 not equal to 30? ___
Explain how multiplying by 0.01 is the same as dividing by 100: ___