205×4=
80×90=
20×330=
450÷5=
210×12=
660÷3=
65×20=
15×9=
12×400=
42×400=
101×90=
70÷14=
5.43+16.79= 50-18.43= 9.8×1.03=
==
3.4+5.2= 0.7 +4.8= 0.65-0.34=
8.4+0.2= 8.3-0.8= 9.7+5.7= 65.2-5=
0.3×0.7= 3.21÷1000= 0.25×0.4= 45×0.2=
8.7-0.7= 5.6+1.3= 10-2.6= 105÷100=
0.25×8= 0.4×5= 0.9×0.8= 6.5+0.35=
+=
-=
++=
1--=
1-=
--=
①75.6×27﹣170×7.56
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