Addition- Estimate

Front

What does it mean to estimate the sum to the largest place value?

Back

Estimating the sum to the largest place value means rounding each number to the nearest ten, hundred, or thousand before adding them together.

Front

Estimate the sum of 1,350 and 50 to the largest place value.

Back

1,400

Front

Estimate the sum of 280 and 30 to the largest place value.

Back

300

Front

Estimate the sum of 65 and 5 to the largest place value.

Back

70

Front

Estimate the sum of 390 and 20 to the largest place value.

Back

400

Front

Estimate the sum of 130 and 10 to the largest place value.

Back

140

Front

What is rounding in addition?

Back

Rounding in addition is adjusting numbers to make them easier to add, usually to the nearest ten, hundred, or thousand.

Front

Why is estimating sums important?

Back

Estimating sums helps to quickly check if an answer is reasonable and can simplify calculations.

Front

Estimate the sum of 1,245 and 755 to the largest place value.

Back

2,000

Front

Estimate the sum of 1,600 and 400 to the largest place value.

Back

2,000