Math

Multiplying by 10's;100's;1000's

0

30 x 6

180

1

20 x 4 =

80

2

3,000 x 7 =

21,000

3

50 x 9,000 =

450,000

4

600 x 900 =

360,000

double digit multiplication

0

2 x 42 =

84

1

65 x 9 =

585

2

9 x 63 =

567

3

98 x 8 =

784

4

91 x 4 =

364

triple digit multiplication

0

3 X 421 =

1,263

1

8 X 125

1000

2

9 X 861=

7,749

3

8 X 888 =

7,104

4

8 X 668 =

5,344

four digitmultiplication

0

7 x 1000 =

7,000

1

5 x 1,234 =

6,170

2

6 x 3,236

19,578

3

5 x 2,525 =

16,625

4

4 x 9,999 =

39,996

front endESTIMATING

0

Estimate:

6 x 18 =

120

1

Estimate:

6 x 75 = 

480

2

Estimate:

7 x 849 =

5,600

3

Estimate:

7 x 2,412 =

7,000

4

Estimate:

5 x 8,505 =

45,000