Rounding Numbers to Estimate Sums Quiz

What is the first step in estimating the sum of numbers by rounding?

• Round each number.

• Multiply the numbers.

• Add the numbers directly.

• Subtract the numbers.

What is the rhyme used to help with rounding numbers?

• Five or greater, add one more.

• Four or less, add one more.

• Four or greater, let it go.

• Five or less, add one more.

If you round 87 using the rhyme, what number do you get?

• 95

• 90

• 85

• 80

When rounding 302 to the nearest hundred, what is the result?

• 200

• 300

• 350

• 400

What is the estimated sum of 302 and 456 after rounding?

• 800

• 750

• 700

• 850

In the different rounding method, what do you do if a number is closer to zero?

• Add zero.

• Add one.

• Subtract one.

• Subtract zero.

Using the different rounding method, what is 52 rounded to?

• 50

• 55

• 45

• 60

What is the estimated sum of 52 and 39 using the different rounding method?

• 80

• 85

• 90

• 95

When rounding 790 to the nearest hundred, what is the result?

• 750

• 900

• 800

• 700

What is the estimated sum of 790 and 112 after rounding to the nearest hundred?

• 800

• 900

• 1000

• 950