Estimate differences

Estimate the difference to
71-37=

• 30
• 40
• 35

Tags

CCSS.3.NBT.A.2

Estimate the difference to
89-31=

• 70
• 60
• 50

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

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

• 510
• 500
• 780
• 515

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

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

• 600
• 780
• 500
• 510

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Round to the nearest 10, then estimate:
57 − 21

• 40
• 30
• 45
• 36

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Round to the nearest ten, then estimate:
546 −209

• 340
• 700
• 300
• 350

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

A number that could round to 80 is...

• 74
• 88
• 78

Tags

CCSS.3.NBT.A.1