文档介绍：47+53=52+39=60-46=15+19=74+18=6×3=53+46=76-43=87-56=27+53=56-26=9×3=52+17=38+56=57+15=49+16=25+56=9×1=29+66=36+56=63-59=85-36=64-25=9×7=29+39=33+53=46+3=269+19=6×5=4×4=7×5=1×8=2×9=2×5=35+19=6×5=8×5=9×5=8×7=7×5=7×2=6×9=3×4=2×4=6×9=3×1=55-16=7×6=24-6×5=87-7×5=45-1×8=34-2×9=83-9×3=15-2×5=32+8×5=42+9×5=18-9×1=82-9×1=32-8×1=73-7×5=22-7×2=41-3×4=69-1×3=63-2×4=42+6×9=76-3×1=5+4×4=20-6×5=92-4×3=6+6×5=77-7×6=67-6×9=47+53=52+39=60-46=15+19=74+18=6×3=53+46=76-43=87-56=27+53=56-26=9×3=52+17=38+56=57+15=49+16=25+56=9×1=29+66=36+56=63-59=85-36=64-25=9×7=29+39=33+53=46+3=269+19=6×5=4×4=7×5=1×8=2×9=2×5=35+19=6×5=8×5=9×5=8×7=7×5=7×2=6×9=3×4=2×4=6×9=3×1=55-16=7×6=4×3=6×5=76+24=67-38=34+62=24-6×5=87-7×5=45-1×8=34-2×9=83-9×3=15-2×5=32+8×5=42+9×5=18-9×1=82-9×1=32-8×1=73-7×5=22-7×2=41-3×4=69-1×3=63-2×4=42+6×9=76-3×1=5+4×4=20-6×5=47+53=52+39=60-46=15+19=74+18=6×3=53+46=76-43=87-56=27+53=56-26=9×3=52+17=38+56=57+15=49+16=25+56=9×1=29+66=36+56=63-59=85-36=64-25=9×7=29+39=33+53=46+3=269+19=6×5=4×4=7×5=1×8=2×9=2×5=35+19=6×5=8×5=9×5=8×7=7×5=7×2=6×9=3×4=2×4=6×9=3×1=55-16=7×6=4×3=6×5=76+24=67-38=34+62=24-6×5=87-7×5=45-1×8=34-2×9=83-9×3=15-2×5=32+8×5=42+9×5=18-9×1=82-9×1=32-8×1=73-7×5=22-7×2=41-3×4=69-1×3=63-2×4=42+6×9=76-3×1=5+4×4=20-6×5=小学二年级数学(上册)口算练****题36+38=26+48=76+16=75-46=59+23=58+14=24+37=45+36=55+26=80+7=73-29=64-16=56+26=36+45=32+49=98-53=31+38=51+29=16+38=71-8×6=66-6×7=44-1×4=61-8×6=36-3×3=63-6×5=81-4×6=51-7×3=92-9×7=9×8-63=98-2×6=54-2×2=23-7×1=17-5×3=9×6-33=63-9×6=34-9×3=54-5×6=48-8×2=2-5×1=44-7×5=89-6×8=41-3×3=6×8-27=小学二年级数学(上册)口算练****题36+38=26+48=76+16=75-46=59+23=58+14=24+37=45+36=55+26=80+7=73-29=64-16=56+26=36+45=32+49=98-53=31+38=51+29=16+38=71-8×6=66-6×7=44-1×4=61-8×6=36-3×3=63-6×5=81-4×6=51-7×3=92-9×7=9×8-63=98-2×6=54-2×2=23-7×1=17-5×3=9×6-33=63-9×6=34-9×3=54-5×6=48-8×2=2-5×1=44-7×5=89-6×8=41-3×3=6×8-27=小学二年级数学(上册)口算练****题36+38=26+48=76+16=75-46=59+23=58+14=24+37=45+36=55+26=80+7=73-29=64-16=56+26=36+45=32+49=98-53=31+38=51+29=16+38=71-8×6=66-6×7=44-1×4=61-8×6=36-3×3=63-6×5=81-4×6=51