Estimate Sums & Differences

Front

Estimate to the nearest ten: 312 + 456

Back

770

Front

Estimate to the nearest ten: 758 - 247

Back

510

Front

Estimate the sum of 625 and 291 to the nearest ten.

Back

920

Front

Keaton scored 427 points in the first round of a video game. He scored 189 points in the second round. About how many points did Keaton score altogether?

Back

600 or 620

Front

Estimate to the nearest hundred: 460 + 382

Back

900

Front

What is estimation in math?

Back

Estimation is finding a number that is close enough to the right answer, often used for quick calculations.

Front

Why do we round numbers?

Back

We round numbers to make them easier to work with, especially for estimation.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the nearest ten to 67?

Back

70

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the nearest hundred to 245?

Back

200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round 84 to the nearest ten?

Back

You round up to 80 because 84 is closer to 80 than to 90.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3