Fluently adding and subtracting three-digit whole numbers

Estimate the sum of 327+431 by rounding to the nearest hundreds

• 700
• 600
• 758
• 800

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Rewrite the problem.

• 700 + 70 + 4

• 700+60+14

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Round each number to the nearest ten to estimate the sum.38 + 115=                

• 158

• 140

• 146

• 160

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

247-100=

• 347

• 447

• 147

• 100

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the difference of 412 - 257 by rounding to the nearest hundreds

• 250

• 150

• 200

• 100

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Round to the nearest 10, then estimate:
642 − 137

• 510
• 500
• 780
• 515

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Mrs. Haskins has $459 in her savings and $101 in a piggy bank in her closet. To the nearest hundred dollars, approximately how much money does she have altogether?

• 600

• 605

• 500

• 560

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the sum: 62+35

• 95

• 90

• 100

• 97

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

300-111=

• 129
• 189
• 153
• 200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

23 + 45
Round Nearest Ten

• 20 + 40 = 60
• 30 + 40 = 70
• 20 + 50 = 70
• 20 + 50 = 70

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7