Write an expression that shows how to use the halving and doubling strategy to find [tex]28 \times 50[/tex].

28 x 50 halve 28, double 50 14 x 100 easy: 1400

Answered by Anonymous | 2024-06-10

First we have to know that how we can double a number and half a number.
Halving the number means dividing the number by 2 and doubling the number means multiply by 2.
Now the given expression is "28 x 50".
half of the number 28 = 28/2 = 14
and double of the number 50 = 50 x 2 = 100
Now, multiply 14 and 100.
14 x 100 = **1400 **answer.
There is one other method also to solve this;
Double of 50 is 100,
so 28 x 100 = 2800
now half of the answer is 2800/2
= **1400 **

Answered by ahmedishaal | 2024-06-11

Using the halving and doubling strategy for 28 × 50 , we find 14 × 100 = 1400 or 28 × 100 = 2800 then halve it to get 1400 . Both methods result in the same answer, 1400 .
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Answered by ahmedishaal | 2024-09-26