Estimate Sums and Differences

Front

What is estimation in math?

Back

Estimation is a way to find a number that is close to the exact amount, often by rounding numbers.

Front

How do you round a number to the nearest hundred?

Back

Look at the tens digit: if it's 5 or more, round up; if it's 4 or less, round down.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Estimate the sum of 250 + 370 by rounding to the nearest hundred.

Back

600

Front

Estimate the difference of 90 - 25 by rounding to the nearest ten.

Back

60

Front

What is the best estimate of 926 - 607?

Back

300

Front

How do you find the difference between two numbers?

Back

Subtract the smaller number from the larger number.

Tags

CCSS.7.NS.A.1C

Front

Estimate the sum of 327 + 431 by rounding to the nearest hundred.

Back

700

Front

What is the greatest place value?

Back

The greatest place value is the highest value position in a number, such as thousands, hundreds, tens, or ones.

Tags

CCSS.4.NBT.A.1

Front

Estimate the total number of works of art: 237 + 349 + 219 by rounding to the nearest hundred.

Back

700

Front

What is the estimated difference between 1,537 and 2,785 when rounded to the nearest hundred?

Back

1,300