Chapter 3: Subtraction 1-1000

subtracting Mentally

100

34 - 14

20

200

320 - 110

210

300

999 - 555

444

400

225- 105

120

500

700 - 11

689

Subtraction w/o Regrouping

100

48- 24

24

200

849 - 205

644

300

652 -321

331

400

219 - 108

111

500

475- 120

355

Subtraction with Regrouping

100

600- 199

401

200

23 - 17

6

300

831 - 276

555

400

456- 189

267

500

963 - 875

88

Subtraction Vocabulary

100

What is the name for the answer to a subtraction equation?

difference

200

When you subtract, is the whole amount going to increase or decrease?

decrease

300

Another name for me is take away, what am i?

Subtraction

400

When you "borrow" from another place value, what is that called?

Regrouping (subtraction regrouping)

500

Winner Winner - you got a free 500 points!

woohoo!

Misconceptions:True or False

100

The opposition of subtraction is division

FALSE

200

The inverse operation of addition is subtraction

TRUE!

300

When you subtract the numbers are INCREASING?

FALSE!

400

When it comes to subtraction, you do NOT start in the ones place.

FALSE!

500

Subtraction starts with a whole amount and takes away or minuses part of the whole.

TRUE!