prefix
in-
ex: incomplete
not able to or not
7 x 8
what is 56 ?
81 divided by ___ = 9
what is 9 ?
10, 40, 70, 100, __?__
what is 30 ? (add 30 each skip count)
1/2 + 1/4=
what is 3/4 ?
un-
to reverse or opposite
9 x 11
what is 99 ?
33 divided by 3 = ?
what is 11?
70, 80, 90, 100, 110, 120, 130, __?__
what is 140 ?
3/5 + 1/10 =
what is 7/10 ?
re-
to do again
ex: reread
11 x 12
what is 132 ?
1200 divided 100 = ?
what is 12 ?
1000, 2000, 3000, 4000, 5000, __?__, 7000, 8000, __?__
what is 6000 and 9000 ?
9/12 + 1/4 =
what is 12/12 or 1 ?
il-
not clear
no legal
4 x 9
what is 36 ?
550 divide by ___ = 110
what is 5 ?
150, 170, 190, _?__, 230
what is 210 ?
1/4 + 1/8 =
what is 3/8 ?
pre-
before
ex: predate
100 x 10
what is 1000 ?
999 divided by 3 = ?
what is 333 ?
10050, 9050, __?__, 7050, 6050
what is 8050 ?
5/8 - 1/4 =?
what is 3/8?