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

Question

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

anonymous · Answer

well. if your here asking for help, might as well use a calculator.

anonymous · Answer

lol i just put do not use calculator XDDD

aripotta · Answer

29 is about 30. doubling 30 is easier than doubling 29, right?

aripotta · Answer

so 30 x 2 = 60

aripotta · Answer

and 60 - 2 = 58

aripotta · Answer

57 is about 60. 60 x 2 = 120
120 - 6 = 114

aripotta · Answer

is this making sense?