Number bonds to 100
Number bonds to 100 are the pairs of whole tens and, later, any two numbers that make 100. They make mental subtraction and giving change far quicker.
Practise bonds to 100 →Asked as 100 − ? , which is the same fact from the other side
Every pair
10 + 90100
20 + 80100
30 + 70100
40 + 60100
50 + 50100
How to learn them
Take the number to the next whole ten first, then to 100. From 37: three more makes 40, sixty more makes 100, so the bond is 63.
Questions
▸What are number bonds to 100?
Number bonds to 100 are the pairs of whole tens and, later, any two numbers that make 100. They make mental subtraction and giving change far quicker.
▸What goes with 10 to make 100?
10 + 90 = 100.
▸How do you learn them?
Take the number to the next whole ten first, then to 100. From 37: three more makes 40, sixty more makes 100, so the bond is 63.