Page 1 of 2
💡 Tip: Count all the decimal places in both factors. That's how many decimal places go in your answer.
Example: 0.25 × 0.4 → 2 + 1 = 3 decimal places → 25 × 4 = 100 → 0.100 = 0.1
1 Hundredths × Whole Number
Multiply, then place the decimal point (2 decimal places in the answer).
0.12 × 4 =
0.35 × 6 =
1.25 × 8 =
2.04 × 5 =
0.98 × 3 =
3.50 × 7 =
4.16 × 9 =
0.07 × 8 =
2 Hundredths × Tenths
Total decimal places = 3. Watch the zeros!
0.25 × 0.4 =
0.15 × 0.6 =
1.50 × 0.3 =
0.42 × 0.8 =
2.05 × 0.7 =
0.36 × 1.5 =
3.12 × 0.4 =
0.08 × 0.9 =
3 Hundredths × Hundredths
Total decimal places = 4. The products are small — place the decimal carefully!
0.12 × 0.15 =
0.25 × 0.30 =
0.50 × 0.50 =
0.75 × 0.20 =
1.25 × 0.12 =
0.99 × 0.10 =
2.50 × 0.40 =
0.08 × 0.05 =
Page 2 of 2
4 Vertical Multiplication ⬇️
Multiply as whole numbers, then place the decimal.
5 Place the Decimal Point 📍
The digits are given — you just need to place the decimal point correctly.
0.25 × 0.8 = 200 →
1.30 × 0.5 = 650 →
0.15 × 0.15 = 225 →
3.04 × 0.3 = 912 →
0.50 × 0.50 = 2500 →
2.75 × 4 = 1100 →
6 Word Problems 📖
Write the equation and solve.
- 1. A tile is 0.25 m wide and 0.30 m long. What is its area?
Equation: Answer: m²
- 2. Gas costs $1.45 per liter. How much do 6 liters cost?
Equation: Answer: $
- 3. A piece of fabric is 2.50 m long. Sara needs 0.4 of that length. How long is her piece?
Equation: Answer: m
- 4. A snail crawls 0.08 m per second. How far does it go in 0.5 seconds?
Equation: Answer: m
Ex 1: 0.48, 2.10, 10.00, 10.20, 2.94, 24.50, 37.44, 0.56
Ex 2: 0.100, 0.090, 0.450, 0.336, 1.435, 0.540, 1.248, 0.072
Ex 3: 0.0180, 0.0750, 0.2500, 0.1500, 0.1500, 0.0990, 1.0000, 0.0040
Ex 4: 0.940, 24.48, 0.4375, 5.400, 0.0540
Ex 5: 0.200, 0.650, 0.0225, 0.912, 0.2500, 11.00
Ex 6: 0.075 m², $8.70, 1.00 m, 0.04 m