Estimation Quiz

When rounding off numbers to the nearest 10, if the ones digit is less than 5, what should be done?

• Round the number to the nearest 1000

• Round the number to the nearest 100

• Round the number down to the previous 10

• Round the number up to the next 10

What is the estimate for adding 61 and 35 after rounding off to the nearest 10?

• 90

• 95

• 100

• 105

When rounding off numbers to the nearest 100, if the tens digit is less than 5, what should be done?

• Round it down to the previous 100

• Round it to the nearest 1000

• Round it up to the next 100

• Round it to the nearest 10

What is the estimate for adding 345 and 572 after rounding off to the nearest 100?

• 850

• 950

• 900

• 800

When rounding off numbers to the nearest 1000, if the hundreds digit is less than 5, what should be done?

• Round it up to the next 1000

• Round it down to the previous 1000

• Round it to the nearest 10

• Round it to the nearest 100

What is the estimate for adding 1200 and 3689 after rounding off to the nearest 1000?

• 5500

• 5000

• 4500

• 4000

When rounding off numbers to the nearest 10, if the ones digit is 5 or above, what should be done?

• Round it up to the next 10

• Round it to the nearest 100

• Round it to the nearest 1000

• Round it down to the previous 10

What is the estimate for subtracting 42 from 689 after rounding off to the nearest 10?

• 600

• 625

• 650

• 675

What should be done when rounding off the number 692 to the nearest 10?

• Round it down to 40

• Round it to 60

• Round it to 70

• Round it up to 50

What is the estimate for adding 35 and 61 after rounding off to the nearest 10?

• 90

• 95

• 100

• 105