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Math: Middle School: Grades 6, 7 and 8 Quiz - Numbers - Decimals - Adding and Subtracting (Questions)

This Math quiz is called 'Numbers - Decimals - Adding and Subtracting' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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Adding and subtracting decimal numbers involves knowing what to do with the decimal point. It is just like normal addition and subtraction of numbers, except you have to remember to line up the decimal point and add zeros to make it easier.

See how you fare in the following Math quiz on the subject.

1. What is 0.5 + 1.8?
[ ] 2
[ ] 2.1
[ ] 2.2
[ ] 2.3
2. What is 0.5 + 1.18?
[ ] 1.23
[ ] 1.58
[ ] 1.68
[ ] 2.32
3. What is 75.3 - 3.18?
[ ] 72.12
[ ] 71.9
[ ] 71.7
[ ] 71.2
4. George and Jake pay £4.25 each for a ticket to the circus. How much did they hand over?
[ ] £8.25
[ ] £8.40
[ ] £8.50
[ ] £8.75
5. A pint of milk costs 76p. However, if you buy 3 pints of milk, you only pay for 2. How much is 3 pints of milk?
[ ] 76p
[ ] £1.52
[ ] £2.28
[ ] £2.75
6. A greyhound runs an average of 37.5mph. A hare runs an average of 44.7mph. How much faster can the hare run?
[ ] 5.2
[ ] 6.2
[ ] 7.2
[ ] 8.2
7. What is 37.89 + 24.11 - 18.09?
[ ] 43.91
[ ] 47.14
[ ] 48.93
[ ] 52.25
8. What is 783.76 - 2.13?
[ ] 78.3
[ ] 76.23
[ ] 761.15
[ ] 781.63
9. Mick's test's results for the week are 4.8, 6.6 and 9.4. What is his total?
[ ] 18.8
[ ] 20.8
[ ] 22.8
[ ] 24.6
10. What is 22.7 - 4.13 + 0.008?
[ ] 17.76
[ ] 18.441
[ ] 18.5
[ ] 18.578
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Math: Middle School: Grades 6, 7 and 8 Quiz - Numbers - Decimals - Adding and Subtracting (Answers)
1. What is 0.5 + 1.8?
[ ] 2
[ ] 2.1
[ ] 2.2
[x] 2.3
2. What is 0.5 + 1.18?
[ ] 1.23
[ ] 1.58
[x] 1.68
[ ] 2.32
Remember to use zeros - 0.50
3. What is 75.3 - 3.18?
[x] 72.12
[ ] 71.9
[ ] 71.7
[ ] 71.2
4. George and Jake pay £4.25 each for a ticket to the circus. How much did they hand over?
[ ] £8.25
[ ] £8.40
[x] £8.50
[ ] £8.75
£4.25 + £4.25
5. A pint of milk costs 76p. However, if you buy 3 pints of milk, you only pay for 2. How much is 3 pints of milk?
[ ] 76p
[x] £1.52
[ ] £2.28
[ ] £2.75
76p = £0.76. 0.76 + 0.76 = £1.52
6. A greyhound runs an average of 37.5mph. A hare runs an average of 44.7mph. How much faster can the hare run?
[ ] 5.2
[ ] 6.2
[x] 7.2
[ ] 8.2
44.7 - 37.5 = 7.2. To check you have the correct answer, you can also write 37.5 + 7.2 = 44.7
7. What is 37.89 + 24.11 - 18.09?
[x] 43.91
[ ] 47.14
[ ] 48.93
[ ] 52.25
8. What is 783.76 - 2.13?
[ ] 78.3
[ ] 76.23
[ ] 761.15
[x] 781.63
Line up the decimal points and use zeros!
9. Mick's test's results for the week are 4.8, 6.6 and 9.4. What is his total?
[ ] 18.8
[x] 20.8
[ ] 22.8
[ ] 24.6
10. What is 22.7 - 4.13 + 0.008?
[ ] 17.76
[ ] 18.441
[ ] 18.5
[x] 18.578
If the numbers are different lengths, remember to line up the decimal points