Question

You know that multiplication can also be expressed as repeated addition. Why is it more difficult to use repeated addition when multiplying two mixed numbers than it is to use repeated addition when you are multiplying a mixed number by a whole number?

Answer 1

Multiplying mixed numbers using repeated addition can be more challenging than when multiplying a mixed number by a whole number due to the complexity of dealing with mixed numbers. When multiplying a mixed number by a whole number, you can simply add the whole number to itself as many times as the mixed number's whole part. when you multiply two mixed numbers using repeated addition, you have to separately add the fractional parts and then combine them correctly, which can be more involved.

Explanation:

multiplying 2.5 by 1.5 using repeated addition would require adding 2.5 to itself 1.5 times. This means adding 2.5 + 2.5 + 1.25 (half of 2.5). managing the fractional part can be tricky, and it's not as straightforward as multiplying a whole number by a mixed number where you're just adding a whole number multiple times.