Section A Section A Checkpoint

Problem 1

Complete the table, with equivalent measurements. 

kilometers meters centimeters
1.7

15,900

23
Show Solution
Solution
kilometers meters centimeters
1.7 1,700 170,000
0.159 159 15,900 
0.023 23 2,300
Show Sample Response
Sample Response
kilometers meters centimeters
1.7 1,700 170,000
0.159 159 15,900 
0.023 23 2,300

Problem 2

Choose all representations of the number 100,000,000.

A
 10810^8
B
 10 million
C
 10×10×10×10×10×10×1010 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10
D
 100 thousand
E
 100 million
Show Solution
Solution
A, E
Show Sample Response
Sample Response
A, E

Problem 3

It is 325 meters around a track. Jada ran around the track 12 times. How many kilometers did Jada run?

Show Solution
Solution

3.900 kilometers. Sample response: Jada ran 325×12325 \times 12 meters. That’s 3,250+6503,250 + 650 or 3,9003,900 meters. There are 1,000 meters in a kilometer so each digit moves three places to the right because 3 thousands divided by 1000 is 3 ones and 9 hundreds divided by 1000 is 9 tenths.

Show Sample Response
Sample Response

3.900 kilometers. Sample response: Jada ran 325×12325 \times 12 meters. That’s 3,250+6503,250 + 650 or 3,9003,900 meters. There are 1,000 meters in a kilometer so each digit moves three places to the right because 3 thousands divided by 1000 is 3 ones and 9 hundreds divided by 1000 is 9 tenths.