1、11-4= 34+40= 43+5= 90-30= 40+20= 10+90= 17+35= 15-8= 12-6= 14-6= 52-10= 13-8= 65+5= 20+78= 89-8= 52+9-30= 20+58+2= 30+30+7= 41-10+60= 96-6×8= 2、23+9= 18-9= 7+7= 11+9= 14-5= 40+30= 43-3= 80-60= 70+3= 12-7= 30+8= 13-9= 50-10= 90-40= 60+10= 21-20+4 72-22+10 36+48-25 (34-27)×5 29+42÷7 3、56-6= 90+0= 79-4= 50+30= 90-70= 54+4= 18-9= 7+7= 11+9= 14-5= 40+30= 43-3= 80-60= 70+3= 12-7= 30+8= 13-9= 50-10= 90-40= 60+10= 43+26-17 48÷8×5 37-27÷9 (26-19)×6 64÷(24-16) 4、79-4= 50+30= 90-70= 54+4= 56-6= 2×9= 7×4= 12+70= 45+40= 90+0= 6 × 6 = 30+50= 20+70= 40+10= 70+5= 36+48-25 96-6×8 (34-27)×6 29+42÷7 5×(100-99) 5、4×3= 1×1= 2×4= 4×2= 36+24= 59-18= 79-15= 42+38= 4×2+2= 3×3+6= 4+9+2= 7+6+6= 3×2+5= 4×3-4= 3×4-6= 6×6-6= 5×3= 5×5= 47+20= 87-40= 6、7+8= 20-9= 36+24= 4×6= 54-0= 34-19= 3×6= 5×6= 20-6= 3×3= 6÷2= 12÷2= 10÷5= 9÷3= 5÷5= 18+27= 100-30= 29-29= 80-25= 67+9= 7、700+1000= 5080-80= 1500-800= 4800-900= 610-30= 83-27= 80+720= 1400-1200= 578+76= 567+432= 90-15= 45+36= 75+23= 35+17= 280+30= 8×6-9= 40+600= 4+7×9= 530+70= (24-16)×8= 8、(9-3)÷3= 4500-600= 17+69= 45-7= 5005+150= 2310+1270= 40+600= 37+26= 82-49= 5×9+7= 37+26= 8×4+28= 100-86+34= 32+25+41= 26+28= 73+37= 97-88= 7×8+4= 80-41= 7+53= 9、15+18= 4 × 8 = 7 × 7 = 7-7= 6 × 2 = 36-9= 40-8= 48-9= 65+8= 12+14= 87-81= 6 × 7 = 7 × 3 = 7+3 = 18 ÷ 6 = 12 ÷ 4 = 5 × 6 = 24 ÷ 4 = 10 ÷ 5 = 25 ÷ 5 = 10、20 ÷ 4 = 9 × 4 = 7 × 8 = 25+46= 24 ÷ 6 = 20-5= 18- 7= 17-15= 63-17= 34+6= 14+70= 25-5= 49-8= 28+40= 78+2= 95+0= 18 ÷ 3 = 2 × 9 = 18+5= 16+18= 11、4 × 6 = 30 ÷ 5= 18 ÷ 9 = 5 ÷ 5 = 9 ÷ 3 = 75+3= 33+8= 85-8= 78-...