5 Questions
What strategy involves expanding a multiplication problem into simpler ones?
Expanding the number and breaking it down
How does the text suggest making the multiplication of a number by 5 easier?
Rewrite 5 as 10 / 2
Why is multiplying by 9 suggested to be easy in the text?
Because 9 is one less than ten
In the expression 5 x 22, what is the first step suggested in the text to simplify the calculation?
Rewrite 5 as 10 x 2
How does the text recommend simplifying the expression (81 x 10) - (81 x 1) when multiplying by 9?
Replace 81 with (100 - 19)
Learn strategies to multiply numbers without using pencil, paper, or a calculator. Explore techniques such as expanding numbers to simplify the multiplication process, making it quicker and easier.
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