一年级数学20以内的连加连减口算训练
14-6 - 2=16-7+8=11+2+5=9-2 +7=5+10+4=7-7+9=15-3+8=11-9+11=6+13 - 4=8+5+7=3+17-2=12+7-9=5+14 -5=9+10-
1310 +9 -= 199+5 -= 103 +7 += 146 -2 -= 2019+8 -= 1814+13 -= 416 -8 += 167+8 -= 124 -8 += 169+12 -= 96 +3 += 112+5 += 128+7 -= 1714+15 -= 119 -9 += 92 +7 -= 114 +3 += 810 -8 += 218 -2 += 510+4 += 112+6 += 29 +5 += 415 -4 += 77+9 -= 213 -9 += 181+1 += 1917+17 -= 153+8 -= 102+5 += 612 -9 += 147 +8 -= 119+11 -= 712 -8 += 1611 +5 -= 68 +5 += 613 -4 += 1514+13 -= 62 +14 -= 613 -9 += 85+7 += 168 +9 -= 107 -8 += 1313 +15 -= 317-2 += 191 -6 += 514 -5 += 125 -7 += 127-9 += 174 -6 -= 416 -4 += 315 -9 += 514 -5 += 144 -4 += 201 -5 -= 197+13 -= 910-7 += 201 -1 -= 181 -9 += 153 -9 -= 121+6 += 127- 3 += 95 +15 -= 159 +5 -=

