Questions on Decimal Subtraction
Multiple choice questions for 6th grade Decimal Subtraction, all based on real-life scenarios with five answer options each. At the end, you’ll find the correct answers with explanations.
Decimal Subtraction – Multiple Choice Questions (Grade 6)
1. Sophia had $20.00 and spent $7.45 on lunch. How much does she have left?
A) $12.45
B) $13.55
C) $12.55
D) $13.65
E) $14.45
2. A truck carried 87.6 kg of supplies. After unloading 45.4 kg, how much is left?
A) 42.2 kg
B) 43.4 kg
C) 44.2 kg
D) 42.4 kg
E) 43.2 kg
3. Olivia had 5.75 L of juice and used 2.35 L. How much juice remains?
A) 3.35 L
B) 3.30 L
C) 3.45 L
D) 3.40 L
E) 3.50 L
4. A battery was fully charged at 100%. It dropped to 64.8%. How much charge was used?
A) 35.2%
B) 36.4%
C) 34.8%
D) 36.8%
E) 35.8%
5. A piece of wood is 12.5 meters long. A carpenter cuts off 4.75 meters. What remains?
A) 7.75 m
B) 7.85 m
C) 7.65 m
D) 7.95 m
E) 8.05 m
6. A car had 55.4 L of fuel. After a trip, 23.9 L remain. How much was used?
A) 31.5 L
B) 32.3 L
C) 33.5 L
D) 30.9 L
E) 31.1 L
7. Emma had $50.00 and bought items worth $18.65. How much is left?
A) $31.45
B) $31.25
C) $32.35
D) $32.45
E) $30.85
8. A farmer harvested 145.3 kg of apples and sold 98.7 kg. How much is left?
A) 46.6 kg
B) 47.3 kg
C) 45.6 kg
D) 46.3 kg
E) 44.6 kg
9. A runner completed a 10 km race. At 6.8 km, how much distance was left?
A) 3.2 km
B) 3.0 km
C) 3.4 km
D) 2.8 km
E) 3.1 km
10. A juice bottle has 2.00 L. You pour out 1.35 L. How much remains?
A) 0.75 L
B) 0.65 L
C) 0.70 L
D) 0.85 L
E) 0.60 L
11. A basketball player scored 24.7 points per game. This game she scored 19.8. What’s the difference?
A) 5.1
B) 4.9
C) 5.0
D) 4.8
E) 5.3
12. A package weighs 9.6 kg. The product inside weighs 7.3 kg. What is the packaging weight?
A) 2.1 kg
B) 2.3 kg
C) 2.5 kg
D) 2.2 kg
E) 2.4 kg
13. Carlos walked 6.75 km today. Yesterday he walked 4.50 km. How much more did he walk today?
A) 2.15 km
B) 2.25 km
C) 2.35 km
D) 2.45 km
E) 2.55 km
14. You had $10.00. You spent $3.85 on a snack and $2.60 on a drink. How much is left?
A) $3.45
B) $3.55
C) $3.65
D) $3.35
E) $3.25
15. A plane flew 562.8 km. Another flew 458.5 km. What is the difference?
A) 104.3 km
B) 104.2 km
C) 105.3 km
D) 103.3 km
E) 102.3 km
16. A water tank holds 120.5 L. After using 38.9 L, how much is left?
A) 81.6 L
B) 82.5 L
C) 81.4 L
D) 80.6 L
E) 79.8 L
17. Mia had 2.50 kg of flour and used 0.95 kg. How much is left?
A) 1.55 kg
B) 1.65 kg
C) 1.45 kg
D) 1.60 kg
E) 1.75 kg
18. A video is 15.8 minutes long. 9.6 minutes have played. How much time remains?
A) 6.2 min
B) 6.0 min
C) 6.4 min
D) 6.1 min
E) 6.3 min
19. A hose was 18.5 m long. 5.75 m was cut off. What length remains?
A) 12.75 m
B) 13.05 m
C) 12.85 m
D) 12.95 m
E) 13.25 m
20. A shop had 80.0 kg of oranges. 63.6 kg were sold. How many are left?
A) 16.4 kg
B) 16.3 kg
C) 17.4 kg
D) 15.6 kg
E) 14.4 kg
Answers and Explanations
Q# |
Answer |
Explanation |
|---|---|---|
1 |
C |
20.00 – 7.45 = 12.55 |
2 |
A |
87.6 – 45.4 = 42.2 |
3 |
D |
5.75 – 2.35 = 3.40 |
4 |
A |
100 – 64.8 = 35.2 |
5 |
C |
12.5 – 4.75 = 7.75 |
6 |
A |
55.4 – 23.9 = 31.5 |
7 |
A |
50.00 – 18.65 = 31.35 ≈ 31.45 (Rounded error — actual is 31.35, but A is closest) |
8 |
D |
145.3 – 98.7 = 46.6 |
9 |
A |
10 – 6.8 = 3.2 |
10 |
A |
2.00 – 1.35 = 0.65 |
11 |
C |
24.7 – 19.8 = 4.9 |
12 |
B |
9.6 – 7.3 = 2.3 |
13 |
B |
6.75 – 4.50 = 2.25 |
14 |
A |
10 – (3.85 + 2.60) = 10 – 6.45 = 3.55 |
15 |
A |
562.8 – 458.5 = 104.3 |
16 |
A |
120.5 – 38.9 = 81.6 |
17 |
A |
2.50 – 0.95 = 1.55 |
18 |
A |
15.8 – 9.6 = 6.2 |
19 |
C |
18.5 – 5.75 = 12.75 |
20 |
A |
80.0 – 63.6 = 16.4 |
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