Adding and subtracting three-digit whole numbers

Now that all of the place values have been added, what is our last step?

• Write the number in expanded form.

• Write the number in standard form.

• Write the number in word form.

Tags

CCSS.2.NBT.B.7

Subtract using mental math:
  56
- 24
____

• 32
• 70
• 80
• 36

Tags

CCSS.2.NBT.B.7

100+100+100+100+20

• 430

• 400

• 700

• 420

Tags

CCSS.2.NBT.B.7

Addition and subtraction are _________ __________.

• inverse operations
• commutative property
• place value
• word form

Tags

CCSS.2.NBT.B.7

When we subtract, we also start in which place?

• ones

• tens

• hundreds

• thousands

Tags

CCSS.2.NBT.B.7

Which number sentence matches?

• 6 + 10
• 33 + 46
• 303 + 40

Tags

CCSS.2.NBT.B.7

Which method is the partial sums strategy?

• 
• 
• 
• 
• 

Tags

CCSS.2.NBT.B.7

Jen went to the candy store and got 57 white chocolate hugs. Cam got 10 less than Jen. How many white chocolate hugs did Cam get?

• 47
• 57
• 67
• 7

Tags

CCSS.2.NBT.B.7

Front-end-method is

(a)  

Tags

CCSS.2.NBT.B.7

After we complete the ones place, what do we add now?

• Add the ones place.

• Add the hundreds place.

• Add the tens place.

Tags

CCSS.2.NBT.B.7