Rounding Decimals

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was.

Front

What does it mean to round to the nearest tenth?

Back

Rounding to the nearest tenth means looking at the hundredths place to decide whether to round the tenths place up or keep it the same.

Front

What is the rule for rounding up?

Back

If the digit in the place to the right is 5 or greater, round up.

Front

What is the rule for rounding down?

Back

If the digit in the place to the right is less than 5, round down.

Front

Estimate the sum: 8.2 + 2.9

Back

Estimate: 8 + 3 = 11.

Front

Estimate the difference: (8.2 + 2.9) - 7.1

Back

Estimate: 11 - 7 = 4.

Front

Round 6.125 to the nearest tenth.

Back

Rounded: 6.1.

Front

Round 6.125 to the nearest hundredth.

Back

Rounded: 6.13.

Front

What is the nearest tenth of 3.156?

Back

Rounded: 3.2.

Front

How do you estimate a division problem like 100 / (9.8 x 0.9)?

Back

Estimate: 100 / (10 x 1) = 10.