口算
32×100= 1﹣0.26= 15+0.5= 6﹣0.43=
4.5+5.5= 6.2﹣0.7= 2.3+4.7= 29+56=
1.4+0.8= 0.48﹣0.18= 5.6+3= 64÷8×9=
230×30= 280÷20= 9.3÷100= 36+24﹣12=
相关试题
口算
32×100= 1﹣0.26= 15+0.5= 6﹣0.43=
4.5+5.5= 6.2﹣0.7= 2.3+4.7= 29+56=
1.4+0.8= 0.48﹣0.18= 5.6+3= 64÷8×9=
230×30= 280÷20= 9.3÷100= 36+24﹣12=
×12=
+
×
=
﹣
×
= 9×
=
×
= 42×
= 11×
=
×
=
=
×
=
×30=
×
=
×
=
，乙减少它的
，现在的积不变．”他说的对吗？为什么？
×
=
﹣
=
= 400÷25÷8=
×
=
×
= 9+
= 1.25×0.16×8= 0.9+99×0.9=
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