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=相关试题
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=直接写出得数
100﹣46= 50×20= 11×90= 9.8元+0.2元= 11.4+8.6= 0×100=
48÷3= 2.5元+17.5元=
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直接写出得数．
400×5= 0×39= 32÷4=
= 405×2≈
72÷8= 12×3= 420+170=
= 89×7≈
90﹣43= 80÷9= 3000×2=1﹣
= 392×5≈
68÷7= 21×5= 61﹣16=
= 58×6≈
直接写得数
40+35= 108﹣82= 10×0= 72÷8=
700×6= 10×4= 35÷6= 3×8+4=
21×5≈ 48×7≈ 199×2≈ 108×3≈
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