Estimation and Multiplication

Estimate the product of 34 and 56.

• The estimated product of 34 and 56 is 20 x 70 = 1400

• The estimated product of 34 and 56 is 30 x 60 = 1800

• The estimated product of 34 and 56 is 40 x 50 = 2000

• The estimated product of 34 and 56 is 35 x 55 = 1925

Tags

CCSS.4.NBT.B.5

Estimate the product of 78 and 92.

• 8400

• 7200

• 5600

• 6500

Tags

CCSS.4.NBT.B.5

Estimate the product of 45 and 67.

• 3500

• 4100

• 3025

• 2500

Tags

CCSS.4.NBT.B.5

Estimate the product of 89 and 73.

• 1600

• 7400

• 6300

• 5200

Tags

CCSS.4.NBT.B.5

Estimate the product of 56 and 87.

• 6242

• 5400

• 7000

• 4912

Tags

CCSS.4.NBT.B.5

Estimate the product of 123 and 456.

• 51000

• 50000

• 51000

• 56000

Tags

CCSS.4.NBT.B.5

Estimate the product of 234 and 567.

• 100000

• 120000

• 150000

• 200000

Tags

CCSS.4.NBT.B.5

Estimate the product of 345 and 678.

• The estimated product is 300 * 700 = 210,000

• The estimated product is 400 * 700 = 280,000

• The estimated product is 300 * 600 = 180,000

• The estimated product is 345 * 678 = 234,210

Tags

CCSS.4.NBT.B.5

Estimate the product of 456 and 789.

• 300,000

• 500,000

• 600,000

• 400,000

Tags

CCSS.4.NBT.B.5

Estimate the product of 567 and 890.

• The estimated product is 550 * 850 = 467,500.

• The estimated product is 500 * 800 = 400,000.

• The estimated product is 600 * 1000 = 600,000.

• The estimated product is 600 * 900 = 540,000.

Tags

CCSS.4.NBT.B.5