Show:
3rd Grade Multiplication
3rd Grade Rounding
Multiplication Strategies
3rd Grade Addition
3rd Grade Subtraction
100

5X4=

20

100

29 rounded to the nearest 10

30

100

Draw an array for the problem:

4 x 3

@@@

@@@

@@@

@@@       = 12

100

55+15=

70

100

100-18=

82

200

8X4=

32

200

621 rounded to the nearest 100

600

200

___ x 5 = 35

___ = 7


200

184+17=

201

200

456-175=

281

300

10X6=

60

300

214 rounded to the nearest 10

210

300

Draw equal groups for the problem:

4 x 4 =

16

300

220+350=

570

300

820-612=

208

400

7X6=

42

400

749 rounded to the nearest 100

700

400

4 x ___ = 36

____ = 9

400

167+250=

417

400

300-129=

171

500

6X9=

54

500

472 rounded to the nearest 10

470

500

10 x 12 = ?

7 X 1 = ? 

15 X 0 = ?

120

7

0

500

396 + 478 

874

500

279-59=

220