Question

Explain how to use 2s facts to find 4 x 9

Answer 1

Answer:

36

Step-by-step explanation:

when you multiply 2x9 you get 18 and since 2 is half of 4 that means you have to do that twice so do 2x9 again and add both of them up to get a product of 36

Answer 2

The solution to the expression 4 × 9 using 2's facts is;

36

• 2's facts is basically a method of multiplication whereby we are trying to simplify the expression such that we can call it double.

For example; 2 × 5 means double of 5 which is 10.

• Let us apply the concept of 2's facts to the given expression in the question;

We are given; 4 × 9

Now, we know that 4 is a double of 2 and so we have;

2 × 2 × 9

Since we want to express the result as a double, let us multiply one of the 2 by 9 and retain the other 2.

2 × 9 means double of 2 and it is 18

Then we now have 2 × 18 which implies double of 18 which is 36.

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