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One More, One Less
The number 1. Can you add and take away 1 from other numbers?

One More, One Less

This Math quiz is called 'One More, One Less' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is a fun way to learn if you are in the 1st or 2nd grade - aged 6 to 8.

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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.

Can you work out one more or one less than the given number?

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

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