Multiplying Decimals
Q1: What is 2.5 × 4?
✅ Answer: 10
Q6: What is 8.4 ÷ 4?
✅ Answer: 2.1
Q11: A student says:
2.4 × 3 = 7.2
Are they correct?
✅ Answer: Yes
Q16: One notebook costs $2.50. How much do 4 notebooks cost?
✅ Answer: $10.00
Q21: What is:
5.25 × 2
✅ Answer: 10.5
Q2: What is 3.2 × 2.5?
✅ Answer: 8
Q7: What is 12.6 ÷ 3?
✅ Answer: 4.2
Q12: A student says:
6.4 ÷ 2 = 3.2
Are they correct?
✅ Answer: Yes
Q17: A ribbon is 12.6 meters long. It is cut into 3 equal pieces. How long is each piece?
✅ Answer: 4.2 meters
Q22: What is:
16.8 ÷ 0.8
✅ Answer: 21
Q3: What is 4.6 × 1.5?
✅ Answer: 6.9
Q8: What is 7.5 ÷ 2.5?
✅ Answer: 3
Q13: Find the mistake:
3.5 × 2.4 = 84
What should the answer be?
✅ Answer: 8.4
Q18: A runner runs 2.5 miles each day for 4 days. How many miles does the runner travel?
✅ Answer: 10 miles
Q23: What is:
4.25 × 1.2
✅ Answer: 5.1
Q4: What is 2.75 × 3.2?
✅ Answer: 8.8
Q9: What is 14.4 ÷ 0.6?
✅ Answer: 24
Q14: A student solves:
9.6 ÷ 0.3 = 3.2
What mistake did they make?
✅ Answer: They didn't correctly move the decimal in the divisor and dividend. The answer is 32.
Q19: You have $20.00 and each snack costs $2.50. How many snacks can you buy?
✅ Answer: 8 snacks
Q24: What is:
28.35 ÷ 1.5
✅ Answer: 18.9
Q5: What is 0.36 × 0.25?
✅ Answer: 0.09
Q10: What is 18.9 ÷ 0.7?
✅ Answer: 27
Q15: Without solving exactly, determine whether this answer is reasonable:
4.8 × 2.1 = 100.8
Explain why or why not.
✅ Answer: No. 4.8 is about 5 and 2.1 is about 2, so the answer should be around 10, not 100.
Q20: A 15.75-liter container is divided equally into 3.5-liter containers. How many full containers can be filled?
✅ Answer: 4.5 containers
Q25: A school buys 12 boxes of pencils. Each box contains 2.75 pounds of pencils. The pencils are then divided equally among 5 classrooms.
How many pounds of pencils does each classroom receive?
✅ Answer: 6.6 pounds