Page 95 - Arithmetic

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DO NOT DUPLICATE

Solving word problems by subtracting numbers

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not exceeding 99

Example

A hen laid 32 eggs. 17 eggs were broken. How

many eggs remained?

Solution

2 12
3 2 eggs

– 1 7 eggs

1 5 eggs

15 eggs remained.

Exercise 9

Solve the following word problems.

1. Bakari had 31 mangoes. He threw away 12 rotten
mangoes. How many mangoes remained?

2. Boni planted 46 seedlings of fruit trees; 26

seedlings withered and died. How many seedlings
remained?

3. Neema had 51 dirty cups. She washed 15 cups.
How many dirty cups remained?

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Ministry of Education, Science and Technology
Mathematics STD 1.indd 88 03/08/2019 11:18