Show:
prime and composite
multiplication
fractions
division
adding and subtracting
100
Is it prime or composite?

13

Prime

100

50 X 6

300

100

Decompose 9/10

1/10 +1/10 +1/10 +1/10+1/10+1/10+1/10+1/10+1/10


3/10 + 6/10

100

28/4

7

100

12, 458 + 35, 974 + 10, 257

58, 689

200

Is 21 prime or composite?  How many factors does 21 have?

Composite

4

200

124 X 6

744

200

4/10 + 7/10

11/10 or 1 1/10

200

216 divided by 8

27

200

58, 497 - 10,025

48, 472

300

15 is prime or composite?

Composite

300

26 X 13

338

300

5 1/8- 3 2/8

1 7/8

300

64/4

16

300

147, 532 + 324, 649

472, 181

400

48 is composite.  List all it's factors.

1, 2, 3, 4, 12, 16, 24, 48

400

1, 658 x 8

13, 264

400

6 7/9 + 4 3/9

10 10/9 or 11 1/9

400

2, 400/10

240

400

64, 008 - 24. 093

39, 915

500

list 3 prime numbers.

17, 19, 37

500

2, 476 x 4

9, 904

500

5/6 X 3

15/6 or 2 3/6

500

1, 648/4

412

500

what is the missing digit?

 328, __54

+613, 476 =

942, 130

6