笔算．带⊙的要验算⊙900﹣596= ⊙342+158= 81+609= 1089﹣867=306×7 84÷9 56÷8 473×4．
直接写出得数． 382﹣297﹣3== 2÷== 4﹣6= 4.98+0.02= 1÷0.01=（）×72= 25÷5==
直接写出结果． 960÷30= 1.5×40=60 9﹣3.4= 15÷2.5÷4=×25=÷=+= 1﹣+=
直接写出得数 18×40= 910÷70= 6.3÷0.1= 36×25%= 100×10= 35×0.1= 75﹣75×0.1====
直接写出得数． 28+46= 5.7+2.35==== 50×40= 1﹣0.9==
口算： 200﹣102= 0.29÷10= 0.33= 0.32﹣0.2= 7.9÷100%= 2.52=×= 36÷=
= 2÷
=
=
）×72=
=
×25=
÷
=
+
= 1﹣
+
=
=
=
=
=
=
= 50×40=
=
×
= 36÷
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