乘加乘减的口算练习（二年级） 6×7-19= 6×9-19= 1×4-2= 8×8-23= 4×8+44= 9×4+49= 4×2+24= 6×4+27= 1×5+24= 9×3+40= 6×4+25= 2×8-6= 6×1+25= 9×4+49= 5×1-4= 4×7-2= 4×5-10= 3×6-10= 9×9-17= 5×4+35= 9×2-4= 4×8-10= 9×8-45= 7×6+49=8×9-29= 7×8-49= 5×2-1= 3×4+49= 3×9+36= 6×2+28= 3×4+44= 7×3+39= 4×2+43= 1×3+4= 5×6-21= 5×6+43= 8×3+31= 9×9-25= 3×5+42= 9×5-19= 4×4+40= 9×2+22= 7×5+41= 4×5+30= 1×5+9= 8×3-15= 9×4-12= 2×7-0= 4×4-7= 2×5+32= 8×8-5= 3×7-3= 9×1-8= 7×3+23=9×1+34=4×6+46= 4×6-12= 本文来源：https://www.wddqw.com/doc/f70fe35e9b8fcc22bcd126fff705cc1755275fb0.html