Page 39 - Mathematics_Std_4
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Word problems involving multiplication of whole numbers
Example 1
A businessman bought 170 boxes of bar soap. Each box
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contains 20 bars of soap. How many bars of soap were
bought in total?
Solution
1 box contains 20 bars of soap.
170 boxes contain 170 × = 20 3400 bars.
Therefore, the businessman bought a total of 3,400 bars of
soap.
Example 2
The school bought 5624 crates of soda. If each crate had
24 bottles of soda, how many bottles of soda were bought in
total?
Solution
Number of crates 5,624
Each crate contained 24 bottles of soda.
5624
× 24
22496
+112480
134976
Therefore, the school bought a total of 134,976 bottles of
soda.
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MATHEMATICS STD 4 PB 2024.indd 32 06/11/2024 17:17:02