ESTIMATING PRODUCT

If you are estimating 92 x 12, which expression would be best to use?

• 100 x 20

• 90 x 12

• 100 x 30

• 90 x 10

When estimating the product, which expression would be best to use for 62 x 23?

• 60 x 20

• 60 x 2

• 60 x 30

• 6 x 2

What is the first step in finding the estimated product?

• Multiply the ones digit of the second number by the digits of the first number.

• Round off all the numbers to the highest place value.

• Multiply the nonzero digits.

• Count the number of zeros then write it as a product.

When estimating the products, in what place value do we round off the numbers?

• Ones

• tens

• hundreds

• highest place value

 

Based on our rules for rounding off numbers, which is the best example of a good estimate for 562 x 41?

• 560 x 40

• 600 x 40

• 500 x 40

• 600 x 50

When estimating the product, what operation is to perform after getting the rounded numbers?

• Add

• Subtract

• Multiply

• Divide

What is the estimated product of 92 x 46?

• 40 500

• 4 500

• 5 400

• 5 500

What are the possible factors if the estimated product is 63 000?

• 761 x 24

• 698 x 89

• 812 x 91

• 599 x 77

Estimate the product of 245 and 376.

• 90 000

• 70 000

• 80 000

• 60 000

Give the estimated product of 78 and 49.

• 41 000

• 40 000

• 30 000

• 45 000