Powers of 10
102 =
10x10 = 100
Amy worked hard all summer. She earned $26 per week and worked for 12 weeks. How much money did she earn after the summer?
$312
7 x 0.01 =
0.07
Least to Greatest:
40 x 60 =
4 x 60 =
0.4 x 60 =
0.4 x 60
4 x 60
40 x 60
Round to the nearest tenth
5.379
5.4
4 x 103 =
4000
In order to perform a science experiment, Mr. Dastrup had to mix 6.27 oz of a chemical in 7 different beakers full of chemicals. How many oz of chemicals did he need to plan on mixing?
43.89 oz of chemicals
589 x 48 =
28,272
8 x 400 =
40 x 800 =
0.04 x 80 =
0.04 x 80
8 x 400
40 x 800
Round to the nearest hundredth.
34. 819
34.82
6.32 x 102 =
632
What happens to a number when you multiply it by a decimal?
7 x 0.34 =
The answer gets smaller because you are just taking part of the whole.
8.45 x 1.3 =
10.985
5 x 4 =
0.5 x 0.4 =
40 x 50 =
0.5 x 0.4 =
4 x 5 =
40 x 50 =
Round to the nearest whole number.
348.487
348
17.836 x 10 x 10 x 10 =
17,836
What is the area of the horse pen if the length is 78 feet and the width is 59 feet?
78 x 59 = 4,602 square feet
65.3 x 1.2 =
78.36
800 x 6 =
0.6 x 80 =
8 x 6 =
0.6 x 80 =
8 x 6 =
800 x 6 =
Round to the nearest tenth.
864.78
864.8
9 x 102 =
900
Charlotte said that 50 x 80 = 4,000.
Ken said that 50 x 80 = 400.
Who is correct and why?
Charlotte is correct. Ken didn't remember that 5 x 8 = 40 and then you add the two zeros after it.
50 x 80 = 4,000
783 x 495 =
387,585
0.02 x 0.2 =
2 x 20 =
200 x 200 =
0.02 x 0.2 =
2 x 20 =
200 x 200 =
Round to the nearest hundredth.
9,174.369
9,174.37