Greater, Less or Equals!
Addition
Fractions
Volume
Subtraction
100

50 + 50 ? 20 + 81

 Less than! 

100

-1 - -1 -1 - -1  -1 - -1  -1 - -1  -1 - -1 -1 - -1 -1 - -1  -1 - -1  -1 - -1  -1 - -1  -1 - -1 -1 - -1  -1 - -1  -1 - -1  -1 - -1

 0

100

Remainder 5/8

3

100

Volume of 3 x 2

6

100

4 - 3

1

200

22 - 11 ? 21 - 10

Equals!

200

50 + 23

73

200

Twice 5/8

10/16

200

Volume of 5 x 10

50

200

50 - 20

30

300

15 x 3 ? 45 x 0

Greater than!

300

129 + 252

381

300

Divide 42/50

21/25

300

Volume of 20 x a = 200

10
300

55 - 36

19

400

280 + 291 ? 501 - 103

Greater Than!

400

(50 + 29) + 5501 

5580

400

What remains from 2/50

48

400

Volume of 5 - 2 x 20

60

400

40 - 50

-10

500

20 x 200 ? 2857 - 857

Equals!

500
(5279 + 219) + (21 + 550)

6069

500

Divide 42/63 round Remainder and add that to Numerator

22/62

500

Volume of 20 - 15 + 5 x a = 100

10

500

-51 + 52 - 2

-1