This activity is about finding missing numbers on a 100 square.
Here is a partlycompleted 100 square.













































































































Look carefully for patterns in the numbers.
Find A.
Count across to it in ones.
Count down to it in tens.
Can you see that A must be 53?
Find B.
Count down to it in ones.
Can you see that B must be 70?
Find C.
Count across to it in ones.
Count down to it in tens.
Can you see that C must be 95?
Example
Put the numbers in the correct boxes:
8, 95, 4, 20, 53













































































































A and B are singledigit numbers.
C is in the tens column.
D is in the 50s row and in the column that ends in 3.
E is in the 90s row and in the column that ends in 5.
This helps us to get the correct match:
A  =  4 
B  =  8 
C  =  20 
D  =  53 
E  =  95 
Let's have a go at some questions now.