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201072382017825

By Elsie Bryant,2014-12-20 16:44
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201072382017825

    一年级口算练习;二;

     5 1 45+30 56-30 46-30 12+5+50 68-; =63

     + 4 7 45+3 56-3 46+30 65-5-50 63+; =68

     6 5 5+41 89-40 4+74 80-20+6 45+; =65 + 1 2

     50+41 89-4 51+7 6-4+80 ; +20=65

     2 7 6+32 75-30 38+40 -3+70 -; =45 565 + 5 1

     52+6 56-3 93-80 70-30+5 65-; =20

    6 9 40+47 29-4 63-30 60+4+20 ; +16=56 - 4 7

     62+4 77-7 95-5 75-70+9 56-; =16

     8 5 27+40 29-20 86+10 80-20+15 78-; =76

     - 4 3 5+23 56-4 2+82 6+32-30 23+; =29

     6 1 71+5 63-50 69+0 -6+60 -; =89 4690

     + 3 7 45+30 38-4 73-40 78-8+29 ; +5=26 69+1 98-3 10030+50+12 ;-30 -55=3 9 8

     - 3 7 6+33 96-30 59-4 25-20+71 ; +5=18 18+70 39-6 95-4 54+3-5 49-; =29 2

     + 4 7 44+3 25-4 70+28 46+6+20 6+; =48 5+32 78-40 6+98 90-50+42 ; -9=90 7 6

     - 4 25+4 80-30 19-6 32-2+58 ; -20=28

20+35 79-60 20+80 75-40-3 28-; =8

     4 2 4+75 49-7 65+30 22-20+50 65-; =35 + 5 7

     3+95 26-3 92-50 36+20-20 26+; =56

     6 1 30+65 59-3 13+5 59-30+30 ; +42=49 + 8

     53+20 67-3 85-2 28-8+25 85-; =5

     7 9 85+3 99-50 58-30 90-10-60 ; +3=37 - 6

     4+52 30-1 58+30 30+70-50 25-; =21

     2 2 30+65 55-2 36-3 22+4+40 38-; =31

     + 1 7 6+22 27-5 36-30 36+3+10 43+; =47

     8 3 16+3 45-20 5+34 56-2+10 69-; =39

     + 1 6 40+58 76-40 50+34 85+10-20 86-; =80

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