Add & Subtract Rounding

Estimate this sum: 56+43

• 99

• 100

• 90

• 110

Tags

CCSS.3.OA.D.8

CCSS.3.NBT.A.2

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

Tags

CCSS.3.NBT.A.2

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

• add

• subtract

• estimate

• guess

Tags

CCSS.3.OA.D.8

Use compatible numbers to estimate the value of 76 + 26.

• 75 + 25 = 100.
• 80 + 30 = 110
• 76 + 26 = 102
• 70 + 20 = 90

Tags

CCSS.2.NBT.B.5

Estimate to the thousands place.
38,674 + 83,102 =

• 122
• 122,000
• 120,000
• 121,776

Tags

CCSS.3.OA.D.8

CCSS.3.NBT.A.2

Estimate to the ten thousands place.  
47,623 - 12,385 =

• 40
• 34,238
• 40,000
• 30,000

Tags

CCSS.3.OA.D.8

CCSS.3.NBT.A.1

Estimate to the thousands place.
847,167 - 382,208 =

• 500,000
• 464,000
• 464,959
• 465,000

Tags

CCSS.3.OA.D.8

Estimate to the thousands place.
6,375 - 1890 =

• 4,485
• 4,500
• 4,000
• 5,000

Tags

CCSS.3.OA.D.8

CCSS.3.NBT.A.2

Estimate to the hundreds place.
7,538 + 2,317 = 

• 9,800
• 9,900
• 9,855
• 520

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

Estimate to the thousands place.
163,762 + 3,210 =

• 167,000
• 166,972
• 168,000
• 166,800

Tags

CCSS.3.OA.D.8

CCSS.3.NBT.A.2