比一比，谁算得又对又快．63÷21= 50+27= 150÷50= 27×9=370﹣7= 66÷11= 420÷60= 25×30=0×560= 88÷22=
直接写出得数： 80×10%= 0.32=+= 44÷=÷=（0.875﹣）÷= 4×= 5×÷5×=
直接写出得数． 0.49÷0.7= 0.77+0.33= 0÷= 3.06﹣2.6=×200=÷8= 0.21×= 0.52=
0.9÷0.1= 2﹣2÷3= 3÷= 1﹣﹣= 190÷25÷4= 0.55×20= 1.2﹣= 2.7×=
直接写出得数． 0.6÷0.3= 2÷=+=×=﹣=÷=（+）×6=（2+）×8=
15÷0.25= 1.5×= 2.4+1= 1÷1.25×8= 24×== 10= 8+=×1.8=== 0.78+1+0.32=
+
= 44÷
=
÷
=（0.875﹣
）÷
= 4×
= 5×
÷5×
=
×200=
÷8=
= 0.52=
= 1﹣
﹣
=
= 2.7×
=
=
+
=
×
=
﹣
=
÷
=（
）×6=（2+
）×8=
= 2.4+1
= 1÷1.25×8=
=
= 10
= 8
+
=
×1.8=
=
= 0.78+1
+0.32=
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