Rounding Numbers and Estimation

Why is rounding useful when solving word problems?

• It is only useful for small numbers.

• It makes calculations more complex.

• It helps in estimating answers quickly.

• It always gives the exact answer.

On a number line from 0 to 10, which number is 8 closer to?

• 5

• 7

• 10

• 0

What is a common mistake when rounding numbers?

• Rounding only when numbers are large.

• Rounding to the nearest odd number.

• Rounding without considering place value.

• Rounding to the nearest even number.

If you round 323 to the nearest ten, what is the result?

• 330

• 320

• 340

• 300

When rounding 323 to the nearest hundred, what is the result?

• 300

• 400

• 350

• 200

In the book reading problem, what is the rounded total number of pages Mary has to read?

• 290

• 300

• 310

• 280

How many pages did Mary read on Monday after rounding?

• 40

• 50

• 60

• 70

After rounding, how many pages did Mary read on Tuesday?

• 60

• 70

• 80

• 90

What was the estimated number of pages left for Mary to read?

• 170

• 200

• 180

• 190

What was the actual number of pages left for Mary to read?

• 171

• 180

• 190

• 200