Rounding and Estimation for Addition and Subtraction

Round this number to the nearest thousand: 578,765

• 578,765

• 578,000

• 8,000

• 579,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Estimate this sum: 56+43

• 99

• 100

• 90

• 110

What happens if it does not tell you which number to round to?

• Round to the smallest place value

• Round to the largest place value

• Pick a place value number and just round it

• I have no idea what to do! Help!

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round: 1,789,567

• 1,789,600

• 1,000,000

• 2,000,000

• 1,800,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round to the nearest tens thousand: 99,999

• 99,000

• 100,000

• 90,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round to the nearest hundred thousand: 533,378

• 530,000

• 533,378

• 500,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round to the nearest thousand: 89,234

• 89,000

• 90,000

• 89,234

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

If I have 58 gummy bears, and then I eat 20 --- ABOUT how many gummy bears do I have left?

• 38 gummy bears

• 40 gummy bears

• I don't know because I am sure you ate more than 20.

• 80 gummy bears

When you see the word ABOUT in math, you know to . . . ?

• add

• subtract

• estimate

• guess

Round to the nears hundred: 493

• 593

• 500

• 400

• 490

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3