Show:
Addition
Subtraction
Digital Time
Next Highest Dollar
counting
100

1+0

1

100

1-1

0

100

1:00

One O'Clock

100

$3.08

$4.00

100

1, __, ___

2, 3

200

5+2

7

200

5-2

3

200

9:00

Nine O'Clock 

200

$9.76

$10.00
200

6, __, ___, ___

7, 8, 9

300

6+3

9

300

3-1

2

300

5:30

Five Thirty 

300

$16.24

$17.00

300
15, ___, ____
16, 17
400

9+3

12

400

5-5

0

400

3:30

Three Thirty

400

$19.58

$20

400

Count backwards from 10 to 0

10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
500

10+6

16

500

10-8

2

500

12:30

Twelve Thirty 

500

.19

$1.00

500

Count from 20 to 14

20, 19, 18, 17, 16, 15, 14