Addition with Estimation

Round and estimate the sum: 51 + 83

• 120

• 130

• 50

• 30

Round and estimate the sum: 75 + 35 = ?

• 110

• 100

• 120

• 95

Estimate  24+67=

• 910
• 80
• 95
• 90

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

John had 82 marshmallows and Shane had 49 marshmallows. About how many marshmallows did they had in all?

• 130
• 120
• 110
• 100

Estimate the answer to:

906 + 397

• 1300

• 1200

• 1310

• 1303

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

126 + 171 =

• 300
• 297
• 298
• 296

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

394 + 97 =

• 491
• 500
• 490
• 493

Tags

CCSS.4.NBT.B.4

ROUND to the nearest HUNDRED, then add. 
312 + 606 = 

• 300 + 600 = 900
• 312 + 606 = 918
• 500 + 600 = 1,100
• 310 + 610 = 920

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Elena read 3 chapter books in one month.

• She read a book with 217 pages on week 1.
• She read a book with 465 pages on week 2 and 3.
• She read a book with 107 pages on the 4th week.

Which is the best estimate of the number of pages Elena read these 4 weeks?

• 900

• 700

• 1,000

• 800

Tags

CCSS.5.NBT.B.7

What is the sum of the following numerals rounded to the nearest hundreds?

424 and 685

• 1,100

• 1,000

• 300

• 200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7