Practise your addition and subtraction skills with this 11 Plus Maths quiz. Strengthen your number confidence and solve quick problems with ease and accuracy.
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TIP: With numbers less than 100, add the tens first and then add the units.
47 + 15 + 73 = (40 + 10 + 70) + (7 + 5 + 3) = 120 + 15 = 135 You may have noticed another shortcut: 7 + 3 = 10 so 47 + 73 = 40 + 70 + 10 |
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TIP: With numbers less than 100, add the tens first and then add the units.
6 - 12 + 27 + 33 = (20 + 30 - 10) + (6 + 7 + 3 - 2) = 40 + 14 = 54 Be on the lookout for simple calculations that make your life easier! 27 + 33 is one of these |
TIP: With numbers less than 100, add the tens first and then add the units.
34 + 0 + 58 + 17 - 0 + 5 = (30 + 50 + 10) + (4 + 8 + 7 + 5) = 90 + 24 = 114. Ignore zeros! |
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TIP: With numbers less than 100, add the tens first and then add the units.
27 - 68 + 59 - 9 = (20 + 50 - 60) + (7 + 9 - 8 - 9) = 10 + -1 = 9 Remember: if you are adding a minus number, that’s the same as subtracting a positive number |
TIP: With numbers less than 100, add the tens first and then add the units.
23 + 37 + 53 = (20 + 30 + 50) + (3 + 7 + 3) = 100 + 13 = 113 Don't forget: sometimes you will spot an easy addition which will make the calculation easier, e.g. 23 + 37 = 60 |
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TIP: With numbers less than 100, add the tens first and then add the units.
74 - 98 + 29 = (70 + 20 - 90) + (4 + 9 - 8) = 0 + 5 = 5 A quick way to subtract 98 is to subtract 100 then add 2 |
That was an example of a question you must read thoroughly - you didn't think all the 15s were to be added did you?
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TIP: With numbers less than 100, add the tens first and then add the units.
54 - 27 = (50 - 20) + (4 - 7) = 30 + -3 = 27 Another way to do this is to subtract 30 then add 3: 54 - 30 = 24. 24 + 3 = 27 |
TIP: With numbers less than 100, add the tens first and then add the units.
26 + 47 = (20 + 40) + (6 + 7) = 60 + 13 = 73 Another way to add 47 is to add 50 then subtract 3: 26 + 50 = 76. 26 - 3 = 73 |
22 - 38 + 45 = (20 + 40 - 30) + (2 + 5 - 8) = 30 + -1 = 29.
Remember: if you are adding a minus number, that’s the same as subtracting a positive number