Estimate Sums

Front

What does it mean to estimate a sum?

Back

Estimating a sum means finding a rough calculation of the total by rounding the numbers before adding them.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the digit in the ones place. If it's 5 or more, round up. If it's 4 or less, round down.

Front

Estimate the sum: 945 + 718 = ? (round to tens)

Back

1,670

Front

What is the process of rounding to the nearest hundred?

Back

To round to the nearest hundred, look at the digit in the tens place. If it's 5 or more, round up. If it's 4 or less, round down.

Front

Estimate the sum: 1,555 + 4,091 = ? (round to hundreds)

Back

5,700

Front

What is the estimated total of 576 Robux and 941 Robux?

Back

1,500 Robux

Front

Estimate the sum: 431 + 786 = ? (round to hundreds)

Back

1,200

Front

What is the importance of estimating sums in real life?

Back

Estimating sums helps us make quick decisions and understand if our calculations are reasonable.

Front

Estimate the total exercise time: 897 minutes + 644 minutes = ? (include units)

Back

1,500 minutes

Front

What is a practical example of estimating sums?

Back

When shopping, you can estimate the total cost of items in your cart to see if it fits your budget.