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Level 3-4 Numbers - Decimals - Adding and Subtracting
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?

Level 3-4 Numbers - Decimals - Adding and Subtracting

Let's dive into the world of adding and subtracting - it's usually a breeze, right? But hold on, decimals can make it a bit tricky! In this KS3 Maths quiz, we're going to make adding and subtracting decimals a walk in the park for you. It's much easier than you think!

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Decimal numbers have this cool point. On the left are ones, and on the right, you've got tenths, hundredths, and thousandths. They're like the superheroes of describing things smaller than one, replacing fractions. Take 1⁄8 - it's also 0.125, showing 1 tenth, 2 hundredths, and 5 thousandths.

Decimals make handling fractions a breeze - just like regular adding and subtracting. Remember to line up that decimal point and throw in some zeros if needed.

Ready for some fun? Play this quiz to get comfy with adding and subtracting decimal numbers. With plenty of practice, you'll be a pro in no time!

1.
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
£4.25 + £4.25
2.
What is 0.5 + 1.18?
1.23
1.58
1.68
2.32
Remember to use zeros - 0.50
3.
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
76p = £0.76. 0.76 + 0.76 = £1.52
4.
What is 22.7 - 4.13 + 0.008?
17.76
18.441
18.5
18.578
If the numbers are different lengths, remember to line up the decimal points
5.
What is 783.76 - 2.13?
78.3
76.23
761.15
781.63
Line up the decimal points and use zeros!
6.
What is 75.3 - 3.18?
72.12
71.9
71.7
71.2
Remember to put a 0 after 75.3 if you're doing this calculation on paper
7.
What is 0.5 + 1.8?
2
2.1
2.2
2.3
This is similar to 5 + 18 = 23. Just remember to replace the decimal point!
8.
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
4 + 6 + 9 = 19 and 0.8 + 0.6 + 0.4 = 1.8. 1.8 + 19 = 20.8
9.
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
44.7 - 37.5 = 7.2. To check you have the correct answer, you can also write 37.5 + 7.2 = 44.7
10.
What is 37.89 + 24.11 - 18.09?
43.91
47.14
48.93
52.25
All the numbers have 2 numbers after the decimal point so there's no need to add any 0s this time
You can find more about this topic by visiting BBC Bitesize - How to add and subtract decimals

Author:  Frank Evans
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