口算54×5= （19﹣12）×12= 12×70=5050÷50= 49×20= 540÷30=0÷789= 250÷50= 90×88×0=
×1= 52﹣42= 0.75﹣0.5=×=÷= 125×0.08= 0.5+0.02=÷=÷= 0.15×6= 12÷0.3= 0÷=
直接写得数．×16= 12÷= 24×=×÷= 1÷=÷15=÷=×÷×=
直接写得数． 10÷=÷=×= 55×÷=×2= 1÷=÷= 0×+=
口算我最棒= 26×======= 6.4÷20%= 125%×8=
直接写出得数．×= 1÷=÷60%=×15=﹣= 4.5+=×= 6.8÷10%=
×1= 52﹣42= 0.75﹣0.5=
=
÷
= 125×0.08=
÷
= 0.15×6= 12÷0.3= 0÷
=
×16= 12÷
= 24×
=
×
÷
=
÷15=
÷
=
×
÷
×
=
=
÷
=
= 55×
÷
=
×2= 1÷
=
÷
= 0×
+
=
= 26×
=
=
=
=
=
=
= 6.4÷20%= 125%×8=
×
= 1÷
=
÷60%=
×15=
﹣
×
= 6.8÷10%=
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