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056_G3U12_G4U19_˙—» ¿º 2011.3.22 9:5 PM ˘ ` 112 PDF_In 2540DPI 150LPI T
Activity 2 Speed Multiplication
1 . Kate and Thomas pick 3 number cards. They want to multiply the
3 numbers.
I will calculate 7 6 first I will calculate 6 5 first
and then multiply by 5. and then multiply by 7.
7 6 5= ? 6 5 7= ?
Who will multiply the 3 numbers faster? Explain why.
112
Activity 2 Speed Multiplication
1 . Kate and Thomas pick 3 number cards. They want to multiply the
3 numbers.
I will calculate 7 6 first I will calculate 6 5 first
and then multiply by 5. and then multiply by 7.
7 6 5= ? 6 5 7= ?
Who will multiply the 3 numbers faster? Explain why.
112
