5th Grade Place Value and Powers of Ten Quiz: 10 Questions with Explanations

A 10 times as muchB 1/100 of itC The same amountD 1/10 of it

The 4 in the hundreds place is worth 400 and the 4 in the thousands place is worth 4,000. 400 is 1/10 of 4,000. Saying 10 times as much reverses the comparison.

A 46B 4.60C 460D 0.46

Multiplying by 10 moves the point one place right: 4.6 becomes 46.

A 3.8B 0.38C 0.038D 380

Dividing by 100 moves the point two places left: 38 becomes 0.38.

A 40B 1,000C 100,000D 10,000

10 to the fourth power is 10 × 10 × 10 × 10 = 10,000, with 4 zeros.

A 7B 700C 70D 0.7

Move the point 3 places right: 0.07 becomes 70.

A 92B 920C 9.2D 0.92

Move the point 2 places left: 9,200 becomes 92.

A 1B 2C 3D 4

6.5 becomes 650 when the point moves 2 places right, so the exponent is 2.

A 0.08B 8C 0.18D 0.008

One tenth of 0.8 is 0.8 ÷ 10 = 0.08.

A \(3\times10\)B \(10^{3}\)C \(10^{30}\)D \(10+3\)

Three factors of 10 make 10³, which is 1,000. 3 × 10 is only 30.

A $34B $3,400C $340D $34,000

Multiply by 100: the point moves 2 places right, so 3.40 becomes 340.