Convert Decimals and Fractions
Word Problems
Rounding
Multiply Fractions
Place Value
100
Convert 12/100 to a decimal
0.12
100
She buys 0.6 pounds of apples that cost 1.45 per pound. How much does she have to pay? Convert the decimals to fractions, then multiply, then convert the answer back to a decimal.
0.6 x 1.45 6/10 x 145/100 = 870/1,000 She pays $0.87 for the apples
100
Round 3.6 to the nearest one
4.0
100
2/10 x 3/10 = ______
2/10 x 3/10 = 6/10
100
What 3 place values are to the right of the decimal point?
Tenths, hundredths, thousandths
200
Convert 0.8 to a fraction
8/10
200
He buys 0.4 of a box of cookies that cost $0.55 per box. How much does he have to pay total? Convert the decimals to fractions, them multiply the fractions, then convert the answer back to a decimal.
0.4 x 0.55 4/10 x 55/100 = 220/1,000 She pays $0.22 for the cookies
200
Round 11.38 to the nearest tenth
11.4
200
5/1 x 6/10 = ______
5/1 x 6/10 = 30/10
200
3 x 6 = 18 so 0.3 x 6 = ______
0.3 x 6 = 1.8
300
Convert 165/1,000 to a decimal
0.165
300
I buy a piece of fabric that is 2.4 feet by 1.5 feet. What is the area of the fabric? Convert the decimals to fractions, multiply the fractions, and convert the answer back to a decimal.
2.4 x 1.5 24/10 x 15/10 = 360/100 The area is 3.6 feet
300
Round $21.69 to the nearest tenth
$21.70
300
9/100 x 2/10 = ________
9/100 x 2/10 = 18/1,000
300
Which is smaller: 0.00054 or 0.003
0.00054 is smaller
400
Convert 8.9 to a fraction
89/10
400
He buys 3.2 pounds at $1.23 a pound. How much does he pay total? Convert the decimals to fractions, multiply the fractions, and convert the answer back to a decimal.
3.2 x 1.23 32/10 x 123/100 = 3936/1,000 He pays $3.94 (round $3.936)
400
Round $32.05 to the nearest dollar
$32.00
400
12/100 x 13/100 = _______
12/100 x 13/100 = 156/10,000
400
4 x 6 = 24 so ____ x 0.6 = 0.024
0.04 x 0.6 = 0.024
500
Convert 458/100 to a decimal
4.58
500
BONUS QUESTION! In the equation 5N = 30 what do we call "N" and what does N equal?
N is the variable N = 6
500
Round 0.0906 to the nearest hundredth
0.09
500
5/3 x 4/8 = _______
5/3 x 4/8 = 20/24
500
7 x 11 = 77 so ____ x _____ = 0.077
Possible answer: 0.007 x 11 = 0.077
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