Chapter 4 - Multiply by 2-Digit Numbers 4th Grade Go Math!

Is this equation is true or false.

40 x 30 = 160

• true
• false

Is this equation is true or false.

60 x 74 = 4,440

• true
• false

There are 34 boxes of parchment paper in Mr. Darcy's roll top desk. Each box contains 70 pieces of paper. How many pieces of paper are in the roll top desk?

Which would provide a reasonable estimate for each product?

22 x 33

• 25 × 40

• 20 x 30

• 25 x 30

• 10 x 30

Which would provide a reasonable estimate for each product?

26 x 87

• 25 × 90

• 20 x 90

• 25 x 80

• 30 x 80

Which equation shows the BEST estimate for 739 × 26?

• 700 x 30 = 21,000

• 750 x 30 = 22,500

• 700 x 25 = 17,500

• 700 x 20 = 14,000

Which model can be used to find the product of 17 x 24?

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Which model can be used to find the product of 24 x 34?

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Which model can be used to find the product of 12 x 15?

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Which model can be used to find the product of 13 x 42?

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