问题 解答题 口算77÷7=13×3=90×2=14×8=400×9=240÷6=20×3=80÷2=34×2=32÷6=48-15=6×6-6=4×3+2=10×8= 答案 77÷7=1113×3=3990×2=18014×8=112400×9=3600240÷6=4020×3=6080÷2=4034×2=6832÷6=5…248-15=336×6-6=504×3+2=1410×8=80故答案为:11,39,180,112,3600,40,60,40,68,5…2,33,50,14,80.