Multiples of 10
Rounding
Adding
Subtraction
Multpilying
100
2.35 x 1,000
2,350
100
Round 12.87 to the nearest tenth
12.9
100
1.67 + 2.33 =
4
100
You have $19.75, you buy a popcorn and soda for $17.50. How much do you have left?
$2.25
100
325 x 9
2,925
200
14.56 divided by 100
0.1456
200
Round 113 to the nearest tens
110
200
19.7 + 0.387 =
20.087
200
134.9 - 2.3 =
132.6
200
12 x 36 =
432
300
the product of 13.89 and 10 to the power of 4
138,900
300
A pencil is 9.3 inches long, round it to the nearest inch.
9 inches
300
2.643 + 20.93
23.573
300
Today, you had $400.50, you bought an X-box for $367.96. How much do you have left?
$32.54
300
1.2 x 9 =
10.8
400
45.698 divided by 10 to the power of 2
0.45698
400
Bobby ran 4.25 miles, when asked to the round it to the nearest mile he said 5 miles. Is he right?
No, it should be 4 miles
400
65.0004 + 24.657
89.6574
400
114.98 - 13.078
101.902
400
39.5 x 12 =
474
500
13,458 times 1,000
13,458,000
500
Frances lost 3.98 pounds in a month. When asked he said he lost about 4 pounds. Why would he say that?
He rounded to the nearest pound
500
177.89 + 324.987 =
502.877
500
123.45 - 2.997
120.453
500
12.5 x 13 =
162.5
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