A1 Estimating with Whole Numbers

Estimate the sum by rounding to the place value indicated: 4689 + 2469 to thousands.

Carla drives 80 miles on her scooter. If the scooter gets about 42 miles per gallon of gas, about how much gas did she use?

Estimate the sum by rounding to the greatest place value.

152 + 269

Estimate the sum by rounding to the greatest place value.

639,069 + 283,136

Estimate the difference by rounding to the greatest place value.

242 - 179

Estimate the difference by rounding to the greatest place value.

82,465 - 38,421

Which is the best estimate for 817 + 259?

• 10,000

• 2,000

• 1,100

• 800

Estimate the difference by rounding to the greatest place value.

797 - 234

Estimate the difference by rounding to the greatest place value.

6152 - 3195

Estimate the sum by rounding to the greatest place value.

10,982 + 4,821