529759
Description
Flashcards by Bruce Akitt, updated more than 1 year ago
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Created by Bruce Akitt
almost 11 years ago
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| Question | Answer |
| 81 + 9 = ___ | 80 + 10 = = _90_ |
| 81 + 6 =___ | 81 + 6 =_87_ |
| 81 + ___ = 88 | 81 +_7_ = 88 |
| 72 + 9 = ___ | 72+9 = 70+10+1 = _81_ |
| 72 + ___ = 81 | 72 + _9_ = 81 |
| 72 + 5 = ___ | 72+5 = 70 + 7 = _77_ |
| 72 + ___ = 78 | 72 + _6_ =78 |
| 63 + 9 = ___ | 60+12 = 60+10+2 = _72_ |
| 63 + ___ = 71 | 63 + _8_ =71 |
| 63 + 4 = ___ | 63+4 = 60+7 = _67_ |
| 63 + ___ = 68 | 63 + _5_ = 68 |
| 54 + 8 = ___ | 54+8 = 50+10+2 = _62_ |
| 54 + ___ = 61 | 54 + _7_ = 61 |
| 54 + 4 = ___ | 54 + 4 = 50 + 8 = _58_ |
| 54 + ___ = 57 | 54 + _3_ = 57 |
| 45 + 9 = ___ | 45+9 = 40+10+4 = _54_ |
| 45 + ___ = 52 | 45 + _7_ = 52 |
| 45 + 4 = ___ | 45 + 4 = 40 + 9 = _49_ |
| 45 + ___ = 48 | 45 + _3_ = 48 |
| 36 + 7 = ___ | 36+7 = 30+10+3 = _43_ |
| 36 + ___ = 45 | 36 + _9_ = 45 |
| 36 + 2 = ___ | 36 + 2 = _38_ |
| 36 + ___ = 39 | 36 + _3_ = 39 |
| 27 + 9 = ___ | 27+9 = 20+10+6 = _36_ |
| 27 + ___ = 35 | 27 + _8_ = 35 |
| 27 + ___ = 30 | 27 + _3_ = 30 |
| 18 + 5 = ___ | 18+5 = 10+10+3 = _23_ |
| 18 + ___ = 27 | 18 + _9_ = 27 |
| 18 + 2 = ___ | 18 + 2 = 10 + 10= _20_ |
| 64 + 9 = ___ | 64+9 = 60+10+3 = _73_ |
| 64 + ___ = 72 | 64 + _8_ = 72 |
| 64 + 3 = ___ | 64 + 3 = 60 + 7 = _67_ |
| 64 + ___ = 68 | 64 + _4_ = 68 |
| 56 + 9 = ___ | 56+9 = 50+10+5 =_65_ |
| 56 + ___ = 64 | 56 + _8_ =64 |
| 56 + 2 = ___ | 56 + 2 = 50 + 8 = _58_ |
| 56 + ___ = 59 | 56 + _3_ = 59 |
| 48 + 5 = ___ | 48+5 = 40+10+3 = _53_ |
| 48 + ___ = 57 | 48 + _9_ = 57 |
| 48 + ___ = 50 | 48 + _2_ = 50 |
| 48 + 1 = ___ | 48 + 1 = 40 +9 = _49_ |
| 40 + 9 = ___ | 40 + 9 = _49_ |
| 40 + ___ = 47 | 40 + _7_ = 47 |
| 32 + 9 = ___ | 32+9 = 30+10+1 = _41_ |
| 32 + ___ = 40 | 32 + _8_ = 40 |
| 32 + 3 = ___ | 32 + 3 = 30 + 5 = _35_ |
| 32 + ___ = 39 | 32 + _7_ = 39 |
| 24 + 9 = ___ | 24+9 = 20+10+3 = _33_ |
| 24 + ___ = 32 | 24 + _8_ = 32 |
| 24 + 5 = ___ | 24 + 5 = 20 + 9 = _29_ |
| 24 + ___ = 27 | 24 + _3_ = 27 |
| 16 + 9 = ___ | 16+9 = 10+10+5 = _25_ |
| 16 + ___ = 24 | 16 + _8_ = 24 |
| 16 + 3 = ___ | 16 + 3 = 10 + 9 = _19_ |
| 16 + ___ = 18 | 16 + _2_ = 18 |
| 49 + 8 = ___ | 49+8 = 40+10+7 = _57_ |
| 49 + ___ = 53 | 49 + _4_ = 53 |
| 49 + 1 = ___ | 49 + 1 = _50_ |
| 42 + 9 = ___ | 42 + 9 = _51_ |
| 42 + ___ = 50 | 42 + _8_ = 50 |
| 42 + 3 = ___ | 42 + 3 = 40 + 5 = _45_ |
| 42 + ___ = 48 | 42 + _6_ = 48 |
| 35 + 7 = ___ | 35+7 = 30+10+2 = _42_ |
| 35 + ___ = 43 | 35 + _8_ = 43 |
| 35 + 2 = ___ | 35 + 2 = 30 + 7 _37_ |
| 35 + ___ = 39 | 35 + _4_ = 39 |
| 28 + 5 = ___ | 28+5 = 20+10+5 = _33_ |
| 28 + ___ = 36 | 28 + _8_ = 36 |
| 28 + 1 = ___ | 28 + 1 = 20 + 9 = _29_ |
| 28 + ___ = 30 | 28 + _2_ = 30 |
| 21 + 9 = ___ | 21 + 9 = 20 + 10 = _30_ |
| 21 + 6 = ___ | 21+6 = 20 + 7 = _27_ |
| 21 + ___ = 30 | 21 + _9_ = 30 |
| 21 + ___ = 26 | 21 + _5_ = 26 |
| 14 + 8 = ___ | 14+8 = 10+10+2 = _22_ |
| 14 + ___ = 21 | 14 + _7_ = 21 |
| 14 + 5 = ___ | 14 + 5 = 10 + 9 = _19_ |
| 14 + ___ = 17 | 14 + _3_ = 17 |
| 36 + 8 = ___ | 36+8= 30+10+4 = _44_ |
| 36 + ___ = 42 | 36 + _6_ = 42 |
| 36 + 2 = ___ | 36+2 = 30 + 8 = _38_ |
| 36 + ___ = 39 | 36 + _3_ = 39 |
| 30 + 8 = ___ | 30 + 8 = _38_ |
| 30 + ___ = 39 | 30 + _9_ = 39 |
| 24 + 7 = ___ | 24+7 = 20+10+7 = _31_ |
| 24 + ___ = 33 | 24 + _9_ = 33 |
| 24 + 5 = ___ | 24+5= 20+9 = _29_ |
| 24 + ___ = 27 | 24 + _3_ = 27 |
| 12 + 9 = ___ | 12+9 = 10+10+1 = _21_ |
| 12 + ___ = 20 | 12 + _8_ = 20 |
| 12 + 3 = ___ | 12+3 = 10 + 5 = _15_ |
| 12 + ___ = 19 | 12 + _7_ = 19 |
| 26 + 6 = ___ | 26+6 = 20+10+2 = _31_ |
| 25 + ___ = 34 | 25 + _9_ = 34 |
| 25 + 4 = ___ | 25+4 = 20 + 9 = = _29_ |
| 25 + ___ = 30 | 25 + _5_ = 30 |
| 16 + 7 = ___ | 16+7 = 10+10+3 = _23_ |
| 16 + ___ = 24 | 16 + _8_ = 24 |
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