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1. Find the difference.

a. b. c.

T O H T O T O

7 5 plastic bags 1 7 3 paper plates 9 7 napkins
– 6 6 paper cups – 9 7 napkins – 7 5 plastic bags

2. How many more plastic bags than paper cups were collected? _______

3. How many more paper plates than napkins were collected? _______

4. How many more napkins than plastic bags were collected? _______

Exploring Subtraction

Like addition, we can also perform subtraction in different ways. Observe some of them.

Subtract by counting Forward on a number line

Example. Subtract 48 from 62 using the number line.

Solution. Locate 48 on the number line and count up from 48 to 62.

2 + 10 + 2 = 14
So, 62 – 48 = 14.

breaking the Smaller number

For quick subtraction, the smaller number is broken up into parts.

Jaideep and Swati together have a total of 74 coins. If Jaideep has
32 coins, how many coins does Swati have?

74 - 32 = ? 74 – 30 = 44 Can you breakup
32 in other way?

30 + 2 44 – 2 = 42

So, 74 – 32 = 42
Thus, Swati has 42 coins.

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Mathematics 3 Subtraction