Eureka Lesson 10-13 Practice

Estimate the product. Solve using an area model and the standard algorithm.

33.2 × 21 ≈ ____ × ___ = ___

• ≈ 50

  = 54.2

• ≈ 664

  =697.2

• ≈ 6,000

  = 6,972

If the product of 485 × 35 is 16,975, what is the product of 485 × 3.5?

• 1697.5

• 169.75

• 169,750

Use estimation and place value reasoning to find the unknown product.

If 647 × 63 = 40,761 then 6.47 × 63 = ____

• 40,761

• 4,076,100

• 407.61

Solve using the standard algorithm.

6.13 × 14

Estimate. Then, solve using the standard algorithm.

667 × 1.25 ≈ _______ × _______ = _______

• ≈ 800.4

  = 833.75

• ≈ 600

  = 750

• ≈ 700

  = 875

Convert pounds to ounces.

(1 pound = 16 ounces)

14 pounds =___

• 30 ounces

• 224 ounces

• 108 ounces

Convert kilograms to grams.

1 kilogram = 1,000 grams

18.2 kilograms =

Mrs. Jenkins is building an ice rink in her backyard that will measure 8.4 meters by 22 meters. What is the area of the rink?

• 336 m²

• 1848 m²

• 184.8 m²

Abby spends $1.25 each day on lunch at school. On Fridays, she buys an extra snack for $0.55. How much money will she spend in two weeks?

• $6.80

• $13.60

• $18.00

A marker is 0.13 meters long. What is the length in millimeters?

1 meter = 1,000 millimeters

• 130 mm

• 0.00013 mm

• 1300 mm