Basic and Extended Subtraction
Expanded Form Subtraction
Estimate using Quarter Rounding
Traditional Subtraction
Mr. Klaehn Trivia
100

17-9=______

170-90=____

1,700-900=____

8

80

800

100

87-63

 24


100

73- 26

75-25=50

100

62-39

23

100

In what state did Mr. Klaehn attend a wedding last weekend? 

Iowa

200

16-____=8

160-___=80

1,600-___=800

8

80

800

200

294 -66

228

200

78-50

75-50=25

200

991-87

904

200

What is my favorite morning drink?

Coffee
300

____-9=5

____-90=50

____-900=500

14

140

1,400

300

725-62

663

300

489-110

500-100=400

300

741-381

360

300

Where did I go on vacation last winter? 

Las Vegas

400

13-7=____

130-____=60

1,400-700=____

6

70

600

400
834-52

782

400

907-311

900-300=600

400

403-236

167

400

In what month is Mr. Klaehn's Birthday? 

November

500

12-7=____

120-_____=70

1,200-500=_____

5

50

700

500

702- 251

451

500

505-221

500-225=275

500

709-347

362

500

How many teachers in the school graduated from Southland? 

12

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