 # KS1 Maths Quiz - Year 1 Numbers - Order of Numbers (Questions)

This quiz addresses the requirements of the National Curriculum KS1 Maths and Numeracy for children aged 5 and 6 in year 1. Specifically this quiz is aimed at the section dealing with recognising one more or one less than a given number.

Finding one more or one less than is all about understanding the order of numbers and knowing where they are in relation to each other. It's about being able to confidently count forwards or backwards and being able to add or subtract one from a number by counting up or down and knowing what is one more or one less than a given number.

1. What is one more than 27?
 [ ] 27 [ ] 26 [ ] 28 [ ] 78
2. What is one less than 56?
 [ ] 55 [ ] 57 [ ] 45 [ ] 65
3. What is one more than 79?
 [ ] 97 [ ] 80 [ ] 18 [ ] 8
4. What is one less than 50?
 [ ] 94 [ ] 59 [ ] 40 [ ] 49
5. What is one more than 100?
 [ ] 111 [ ] 110 [ ] 99 [ ] 101
6. What is one less than 21?
 [ ] 20 [ ] 22 [ ] 12 [ ] 2
7. What is one more than 16?
 [ ] 61 [ ] 15 [ ] 17 [ ] 62
8. What is one more than 77?
 [ ] 88 [ ] 78 [ ] 87 [ ] 77
9. What is one less than 100?
 [ ] 9 [ ] 99 [ ] 19 [ ] 101
10. What number is one more than 0?
 [ ] 0 [ ] 2 [ ] 10 [ ] 1 KS1 Maths Quiz - Year 1 Numbers - Order of Numbers (Answers)
1. What is one more than 27?
 [ ] 27 [ ] 26 [x] 28 [ ] 78
Looking at the last digit is often helpful
2. What is one less than 56?
 [x] 55 [ ] 57 [ ] 45 [ ] 65
Try to picture the numbers sitting on a number line
3. What is one more than 79?
 [ ] 97 [x] 80 [ ] 18 [ ] 8
Counting up out loud can sometimes help
4. What is one less than 50?
 [ ] 94 [ ] 59 [ ] 40 [x] 49
Counting up to get to the given number will help to work out one less
5. What is one more than 100?
 [ ] 111 [ ] 110 [ ] 99 [x] 101
One more means adding one more to the units digit
6. What is one less than 21?
 [x] 20 [ ] 22 [ ] 12 [ ] 2
One less means taking one away from the units digit
7. What is one more than 16?
 [ ] 61 [ ] 15 [x] 17 [ ] 62
Imagine the number line in your mind and think about which numbers are next to each other
8. What is one more than 77?
 [ ] 88 [x] 78 [ ] 87 [ ] 77
One more means adding on one by counting up
9. What is one less than 100?
 [ ] 9 [x] 99 [ ] 19 [ ] 101
100 is the last number on a hundred square. 99 comes just before it, so is one less
10. What number is one more than 0?
 [ ] 0 [ ] 2 [ ] 10 [x] 1
If you start at zero and count up, the first number you come to is one more than zero