chubbytots
do not use a calculator
1. use mental strategies to double each number
a. 29
b. 57
c. 1.89
2. calculate each product.
a. 15 x 15
b. 1.5 x 15
c. 1.5 x 0.15
d. 1.5 x 1.5 x 1.5
help me pls
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steel11
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well. if your here asking for help, might as well use a calculator.
chubbytots
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lol i just put do not use calculator XDDD
AriPotta
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29 is about 30. doubling 30 is easier than doubling 29, right?
AriPotta
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so 30 x 2 = 60
AriPotta
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and 60 - 2 = 58
AriPotta
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57 is about 60. 60 x 2 = 120
120 - 6 = 114
AriPotta
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is this making sense?