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Writing Numbers
Scientific Notation
Adding and Subtracting Decimals
Multiplying Decimals
Dividing Decimals
100
How do you write this number using digits? nine thousand eight
9,008
100
How do you write 2.15 × 10^1 in standard form?
21.5
100
Subtract 0.7 - 0.1
0.6
100
100 x 0.6 = ?
60
100
2.8/4 = ?
0.7
200
How do you write this number using words? 2,599
two thousand five hundred ninety-nine
200
How do you write 9.64 × 105 in standard form?
964,000
200
0.7 + 0.8 = ?
1.5
200
.2 x 7.3 = ?
1.46
200
781.29/9 = ?
86.81
300
How do you write this number using words? 8,008
eight thousand eight
300
How do you write 75,500 in scientific notation?
7.55 x 10^4
300
A bee colony produced 0.5 pounds of honey, but bears ate 0.1 pounds of it. How much honey remains?
.4 pounds of honey
300
0.5 x 0.5 = ?
0.25
300
Roger bought 5 bricks. All together, the bricks weighed 16.3 pounds. How much did each brick weigh?
3.26 pounds
400
How do you write this number using digits? six thousand five hundred fifteen
6,515
400
How do you write 3,120 in scientific notation?
3.12 x 10^3
400
A carpenter bought a piece of wood that was 0.93 meters long. Then he sawed 0.75 meters off the end. How long is the piece of wood now?
0.18
400
100 × 2.08 = ?
208
400
718.9/7= ?
102.7
500
How do you write this number using words? 101,768
one hundred one thousand seven hundred sixty-eight
500
How do you write 420 in scientific notation?
4.20 x 10^2
500
Ron ran 2.2 miles and then biked 6.97 miles. How far did he go?
9.17 miles
500
2.4 x 2.9 = ?
6.96
500
Addie ordered 2 skeins of yarn, for a total of 702.8 centimeters of yarn. How many centimeters of yarn did each skein contain?
351.4 cm