Unit 1 Math Review

Which of the following results in a number that is 100 times 200?

• removing a zero from 200

• removing two zeros from 200

• adding a zero to the end of 200

• adding two zeros to the end of 200

For which of the following is the first number 10 times the second number?

I. 180 : 18

II. 72 : 720

III. 6,800 : 680

• I, only

• II, only

• I and III, only

• I, II, and III

Tags

CCSS.5.NBT.A.1

Which of the following results in a number that is 10 times 647?

• dividing 647 by 10

• changing the 4 in 647 to a 5

• adding a 0 to the end of 647

• adding a 1 in front of the 6 in 647

Tags

CCSS.5.NBT.A.1

CCSS.5.NBT.A.2

Which equation can be solved with the same number as the equation below?

5 × □ = 5,000

• 10 × □ = 10,000

• 10 × □ = 1,000

• 50 × □ = 500

• 50 × □ = 500,000

Tags

CCSS.5.NBT.A.1

CCSS.5.NBT.A.2

How does the number 9 compare to the number 900?

• 900 is one hundredth of 9.

• 900 is 10 times 9.

• 900 is one tenth of 9.

• 900 is 100 times 9.

Tags

CCSS.5.NBT.A.1

CCSS.5.NBT.A.2

How many tens rods are needed to show 100?

• 10

• 20

• 100

• 200

Tags

CCSS.5.NBT.A.1

Which of the following results in a number that is one tenth of 9,300?

• multiplying 9,300 by 10

• changing the 3 in 9,300 to a 0

• removing a 0 from the end of 9,300

• adding a 0 between the 9 and 3 in 9,300

How many hundreds flats are needed to show 10,000?

• 10

• 100

• 1,000

• 10,000

How many hundreds flats are needed to show 100,000?

• 10

• 100

• 1,000

• 10,000

Three pairs of numbers are shown.

I. 75 : 7,050

II. 6,400 : 640

III. 1,200 : 12

Which pairs have a first number that is 100 times as much as the second number?

• II, only

• III, only

• II and III, only

• I, II, and III