number sense- What two simpler problems can you use to find 9 x 38?
10x38 - 1x38
To find the product of 9 multiplied by 38, you can break down the problem into two simpler multiplication problems. Let's look at two possible approaches:
Approach 1:
Step 1: Multiply 9 by 10 to get 90.
Step 2: Multiply 9 by 3 to get 27.
Step 3: Add the results from Steps 1 and 2. 90 + 27 equals 117.
Therefore, 9 multiplied by 38 is equal to 117.
Approach 2:
Step 1: Multiply 9 by 40 to get 360.
Step 2: Subtract the product of 9 multiplied by 2, which is 18. 360 - 18 equals 342.
Therefore, 9 multiplied by 38 is equal to 342.
Both approaches can be used to calculate the product of 9 and 38. It's important to note that these methods are derived by using number sense and breaking down the problem into simpler calculations.