Estimate to Check Reasonableness

Find each product. Estimate to check reasonableness.

482x8 (add comma)

Find each product. Estimate to check reasonableness.

352x3

Find each product. Estimate to check reasonableness.

2,768x7

Find each product. Estimate to check reasonableness.

4,219x6 (add comma)

A number close to an exact solution tells "about how much or how many" 

• Difference

• Sum

• Estimate

• Product

Melany is organizing a city carnival and needs to estimate the number of balloons she needs. She found a supplier who can provide a pack of balloons that contains 927 balloons and she thinks she will need about 516 packs. Estimate the numbers to the nearest hundred and then solve. How many balloons will Melany have approximately?

• 4,500

• 45,000

• 450,000

• 45

Match the following

• Round to the nearest whole number

• Estimating sums and differences

• Round to the greatest places

• Estimating quotients

• Round to the same place

• Estimating decimal numbers

• Use compatible numbers

• Estimating products

more or less correct or exact

• arithmetic

• estimate

• approximate

• perimeter

Find each product. Estimate to check reasonableness.

Find each product. Estimate to check reasonableness.

1,848x9