Questions 1-3: Decimal Operations and Estimation

When multiplying a number by 10^4, how is the decimal point moved?

• 5 places to the right

• 5 places to the left

• 4 places to the right

• 4 places to the left

Tags

CCSS.5.NBT.A.2

Which power of 10 moves the decimal point 5 places to the right when multiplying a number?

Tags

CCSS.5.NBT.A.2

Estimate: 349.6 − 112.8. Which is the best estimate?

• 270

• 220

• 240

• 250

Estimate: 173.3 + 78.4. Which is the best estimate?

• 270

• 220

• 240

• 250

Estimate: 817.2 − 597.1. Which is the best estimate?

• 270

• 220

• 240

• 250

Estimate: 108.8 + 159.3. Which is the best estimate?

• 270

• 220

• 240

• 250

Carly rides her bike 6.8 miles. Ben rides his bike 0.85 times as far as Carly rides hers. Which expression shows how far Ben rides his bike?

• 6.8 + 0.85

• 6.8 − 0.85

• 6.8 × 0.85

• 6.8 ÷ 0.85

Tags

CCSS.7.EE.B.3

Ben rides his bike for 3 days. Each day he rides 2.5 miles. How far does Ben ride his bike in total?

• 5.5 miles

• 6.5 miles

• 7.5 miles

• 8.5 miles

Tags

CCSS.6.NS.B.3

Which expression is NOT equivalent to 2.89 × 0.6?

• (289 × 6) × (1/10 × 1/10)

• (0.289 × 6) × (10 × 1/10)

• (289 × 6) × (1/100 × 1/10)

• (289 × 60) × (1/100 × 1/100)

Tags

CCSS.5.NBT.B.7

What is the value of 2.89 × 0.6?

• 1.734

• 17.34

• 0.1734

• 1.7340

Tags

CCSS.6.NS.B.3