Practice
[qsm_link id=188]Direct Addition Subtraction[/qsm_link][qsm_link id=2]Positive Big Friend 9[/qsm_link][qsm_link id=3]Positive Big Friend 8[/qsm_link][qsm_link id=4]Positive Big Friend 7[/qsm_link][qsm_link id=5]Positive Big Friend 6[/qsm_link][qsm_link id=6]Positive Big Friend 5[/qsm_link][qsm_link id=7]Positive Big Friend 4[/qsm_link][qsm_link id=8]Positive Big Friend 3[/qsm_link][qsm_link id=9]Positive Big Friend 2[/qsm_link][qsm_link id=10]Positive Big Friend 1[/qsm_link][qsm_link id=11]Positive Big Friend Revision[/qsm_link][qsm_link id=12]Nagetive Big friend 9[/qsm_link][qsm_link id=14]Nagetive Big friend 8[/qsm_link][qsm_link id=15]Nagetive Big friend 7[/qsm_link][qsm_link id=17]Nagetive Big friend 6[/qsm_link][qsm_link id=18]Nagetive Big friend 5[/qsm_link][qsm_link id=19]Nagetive Big friend 4[/qsm_link][qsm_link id=20]Nagetive Big friend 3[/qsm_link][qsm_link id=21]Nagetive Big friend 2[/qsm_link][qsm_link id=22]Nagetive Big friend 1[/qsm_link][qsm_link id=23]Revision test[/qsm_link][qsm_link id=37]Positive Small friend 4[/qsm_link][qsm_link id=38]Positive Small friend 3[/qsm_link][qsm_link id=39]Positive Small friend 2[/qsm_link][qsm_link id=40]Positive Small friend 1[/qsm_link][qsm_link id=41]Revision test[/qsm_link][qsm_link id=42]Negative Small Friend 4[/qsm_link][qsm_link id=43]Negative Small Friend 3[/qsm_link][qsm_link id=44]Negative Small Friend 2[/qsm_link][qsm_link id=45]Negative Small Friend 1[/qsm_link][qsm_link id=46]Rivision Test[/qsm_link][qsm_link id=97]Positive Combination 9[/qsm_link][qsm_link id=98]Positive Combination 8[/qsm_link][qsm_link id=99]Positive Combination 7[/qsm_link][qsm_link id=100]Positive Combination 6[/qsm_link][qsm_link id=101]Revision Test[/qsm_link][qsm_link id=102]Negative Combination 9[/qsm_link][qsm_link id=103]Negative Combination 8[/qsm_link][qsm_link id=104]Negative Combination 7[/qsm_link][qsm_link id=105]Negative Combination 6[/qsm_link][qsm_link id=107]Revision Test[/qsm_link]