口算．
1000﹣60= 50×20= 250÷5= 17×200= 30×50×0= 290×30=
260÷1= 680÷4= 4.3+2.4= 7.3﹣3.5= 9+5.6= 8﹣3.5=
相关试题
口算．
1000﹣60= 50×20= 250÷5= 17×200= 30×50×0= 290×30=
260÷1= 680÷4= 4.3+2.4= 7.3﹣3.5= 9+5.6= 8﹣3.5=
=
=
×
=
=
=
×
=
+
=
×3=
×
×
=
÷
=
5.2×
0.5﹣
12.3﹣2.75﹣7.25 0.12
+
= 0.32+3.2= 0.32=
=
×
= 43÷10%=
×7÷
=
= 50×120=
﹣
=
﹣
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