Page 112 - ICSE Math 1

How To Do?

• Form groups of 10 children each.

• Give 10 ice cream s cks and 1 rubber band to each child of the group.

• Give diff erent addi on problems to each group. For example, ask

one group to add 34 and 25.

• Tell the group to form bundles of ten s cks to represent tens and
single s cks to represent ones. For example, they will form 3 bundles
to represent 3 tens and 4 s cks to represent 4 ones to form 34.

+ = 34

Similarly, they will form 25 using the s cks.

• Then, they will put and count tens together and ones together to
get the answer.

+ = 5 tens + = 9 ones

3 tens 2 tens 4 ones 5 ones

So, the answer will be 59.
• Similarly, each group has to fi nd the answer to the problem sum

given to them.

• In the next round, give problems based on subtrac on to solve.
• Give marks to each group according to the performance. The group

with the maximum marks will be the winner.

102