Multiplication: Decomposing

The video tutorial introduces composting as an eco-friendly practice and draws an analogy to decomposing numbers in mathematics. It explains how numbers can be broken down into simpler parts to facilitate easier multiplication. The tutorial provides examples of decomposing numbers and demonstrates how this technique can be applied to solve multiplication problems efficiently. The video emphasizes that there are multiple ways to decompose numbers, and understanding this concept can aid in mental math and problem-solving.

What is the primary environmental benefit of composting?

• It increases the amount of waste in landfills.

• It reduces the need for chemical fertilizers.

• It speeds up the decomposition of plastics.

• It increases the production of greenhouse gases.

How can the number 21 be decomposed?

• 15 + 5

• 14 + 7

• 10 + 11

• 20 + 1

What is one way to decompose the number 18 for multiplication?

• 8 + 8

• 9 + 9

• 12 + 6

• 10 + 5

When decomposing 425 for multiplication, which of the following is a correct breakdown?

• 400 + 25

• 300 + 100 + 25

• 400 + 20 + 5

• 200 + 200 + 25

What is the result of multiplying 425 by 6 using decomposition?

• 2450

• 2550

• 2650

• 2750