Estimation of sums

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm

Tags

CCSS.2.MD.A.3

Round 56 to the nearest ten

• 60
• 50
• 70
• 55

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 2,409 to the nearest ten

• 2,400

• 2,500

• 2,410

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Britani's chicken, Chikaletta, laid 263 eggs last month. About how many eggs did Chikaletta lay last month?

• 300 eggs

• 200 eggs

• 100 eggs

• 350 eggs

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 123 to the nearest hundred

• 100

• 200

• 120

• 130

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 2,409 to the nearest hundred

• 2,400

• 2,500

• 2,410

• 2,490

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 4,678 to the nearest hundred

• 4,600

• 4,700

• 4,670

• 4,680

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

23 + 45

Round Nearest Ten

• 20 + 40 = 60

• 30 + 40 = 70

• 20 + 50 = 70

• 20 + 50 = 70

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

CCSS.2.NBT.B.7

Estimate  24+67=

• 910
• 80
• 95
• 90

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

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

• 115
• 90
• 100
• 110

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6