b. 24 × 25 = 600
“I have 24 quarters. Four quarters make $1, or 100¢, so 24 quarters make $6 dollars, or 600¢.”
(1 mark)c. 24 × 10 = 240
“I have 24 dimes. Twenty dimes make $2, or 200¢, and 4 more dimes makes 40¢.”
200¢ + 40¢ = 240¢
(1 mark)
3. Textbook, page 74, On Your Own, question 3.a.
4. Sample answers are given.
• I prefer the shortcut method because I don’t have to write as much. I can do it faster.
• I prefer using four partial products because I find it easier to keep track of what I am doing.
(2 marks)
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