Did you know that
2.447.454
tests have already been made here ?
Also try how good you are at mental arithmetic!
Arithmetic without time? Go to leren-rekenen.nl
Here you learn arithmetic error-free for FREE
2.447.454
tests have already been made here ?
Also try how good you are at mental arithmetic!
Arithmetic without time? Go to leren-rekenen.nl
Here you learn arithmetic error-free for FREE
| the OPTELSOMMEN 10-20 in 1 minute has not been made yet this month. |
| the OPTELSOMMEN 10-20 in 2 minutes has not been made yet this month. |
| naam | number correct | number done | |
| 36 | 40 | 3 August | |
| 32 | 36 | 3 August | |
| 29 | 31 | 3 August |
| the OPTELSOMMEN 10-20 in 4 minutes has not been made yet this month. |
| the OPTELSOMMEN 10-20 in 5 minutes has not been made yet this month. |
| the OPTELSOMMEN 10-20 in 10 minutes has not been made yet this month. |