|  |  | - | $9.99
| $5.50 | 9h 49m | |
| | | 7 | $6.26
| $3.50 | 13h 59m | |
| | | 1 | $2.99
| Calculate | 10h 33m | |
| | | - | $12.00
| Calculate | 15h 04m | |
| | | -
 | $15.00
$15.00
| $7.00 | 16h 55m | |
|
| | | - | $0.99
| Calculate | 14h 43m | |
| | | - | $3.00
| Calculate | 1d 17h 01m | |
| | | - | $7.99
| $6.00 | 13h 58m | |
| | | | $24.99
| $9.00 | 11h 11m | |
| | | - | $1.99
| $4.25 | 1d 09h 28m | |
| | | | - | $5.00
| $5.00 | 6h 19m | |
| | | -
| $1.99
$4.99
| $4.95 | 1d 14h 10m | |
| | | - | $14.99
| $11.00 | 13h 49m | |
| Great for Classroom Set/ Home School teachers. Research
| | 
| $12.60
| $7.95 | 10h 45m | |
| | | | $29.99
| Calculate | 7h 29m | |
| | | - | $15.00
| Free | 1d 07h 45m | |
| | | - | $0.50
| Calculate | 1d 10h 37m | |
| | | -
| $6.95
$8.95
| $3.00 | 16h 23m | |
| | | -
| $5.99
$6.95
| $3.23 | 17h 19m | |
| | | 4 | $45.00
| $15.00 | 11h 46m | |
| | | | - | $0.99
| $1.50 | 1d 04h 53m | |
| | | - | $2.99
| $6.25 | 1d 03h 52m | |
| | | - | $0.99
| $2.00 | 1d 03h 52m | |
| | | - | $0.99
| Calculate | 1d 15h 21m | |
| | | - | $0.99
| $4.00 | 1d 14h 11m | |
| | | | $3.50
| $3.25 | 1d 04h 45m | |
| | | 1 | $1.00
| $5.00 | 1d 09h 25m | |
| | | -
| $4.00
$5.50
| $5.00 | 1d 16h 40m | |
|
| | | - | $0.99
| $2.99 | 1d 01h 42m | |
| | | | $2.99
| Calculate | 1d 15h 38m | |
| | | - | $0.99
| Calculate | 1d 12h 09m | |
| | | - | $75.00
| $6.00 | 2d 13h 18m | |
| | | | - | $50.00
| Calculate | 1d 03h 02m | |
| | | - | $12.00
| $5.00 | 1d 09h 41m | |
| | | - | $15.00
| $9.80 | 1d 03h 33m | |
| | | - | $0.99
| $5.00 | 1d 14h 17m | |
| | | - | $9.99
| Calculate | 1d 14h 30m | |
| | | 1 | $0.99
| $3.50 | 1d 09h 29m | |
| | | -
| $1.99
$4.99
| $4.95 | 2d 13h 52m | |
| | | - | $0.99
| $3.00 | 1d 13h 45m | |
| | | 1 | $10.99
| $4.50 | 2d 14h 59m | |
| | | - | $0.01
| Calculate | 11h 29m | |
| | | - | $6.99
| $6.00 | 2d 07h 27m | |
| | | | $79.99
| Calculate | 2d 06h 11m | |
|  | | 1 | $0.99
| $3.00 | 2d 06h 48m | |
| | | 1 | $6.00
| $2.50 | 2d 05h 11m | |
| | | - | $55.00
| Free | 2d 10h 02m | |
| | | - | $6.90
| $4.85 | 2d 09h 52m | |
| | | 2 | $6.50
| $2.50 | 2d 05h 05m | |
| | | - | $0.99
| Calculate | 3d 14h 34m | |
