Estimation

Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans Amy had in all.

• 45
• 40
• 50
• 30

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

CCSS.2.OA.A.1

Bobby has 44 toy cars and trucks. He also has 62 ninja turtles and soldiers. Estimate how many toy cars, trucks, ninja turtles and soldiers Bobby has.

• 86
• 10
• 100

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

Round to the nearest ten, then estimate:
27 + 78

• 115
• 90
• 100
• 110

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm

Tags

CCSS.2.MD.A.3

Round-off 99 to the nearest tens

• 81

• 100

• 75

• 90

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round-off 724 to the nearest hundreds

• 800

• 35

• 756

• 700

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Find the estimated sum of

69 + 12

• 60 + 10 = 70

• 70 + 20 = 90

• 70 + 10 = 80

• 70 + 0 = 70

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

Find the estimated difference of

96 - 33

• 100 + 30 = 130

• 100 - 40 = 60

• 90 - 30 = 60

• 100 - 30 = 70

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

Find the estimated sum of

69 + 12

• 60 + 10 = 70

• 70 + 20 = 90

• 70 + 10 = 80

• 70 + 0 = 70

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

How many fishes do you think are in the fish tank?

• 10

• 1

• 100

Tags

CCSS.1.NBT.A.1