Starter Quiz

Question 1 of 6
1 of 6
Match the pairs of number complements to 100
Click and drag answers to change the order, or select using Tab then move by pressing Space and the arrows on your keyboard.
84
69
58
45
16
31
42
55
A pair of complements to 100 means two numbers that added together are equal to 100
This site uses cookies to store information on your computer. Some of these cookies are essential, while others help us to improve your experience by providing insights into how the site is being used.