直接写出得数.1322-199=______; 1.87+5.3=______; 2-2÷5=______; (57+38)×56=______; 10
直接写出得数.1322-199=______;1.87+5.3=______;2-2÷5=______;(57+38)×56=______;10÷110×10=_____...
直接写出得数.1322-199=______; 1.87+5.3=______; 2-2÷5=______; (57+38)×56=______; 10÷110×10=______; 603×39≈______; 4950÷51≈______; ______:13=13; 42÷(12+23)=______; 3.2×1.25×0.25=______.
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| 解:(1)1322-199=1123; | (2)1.87+5.3=7.17; | (3)2-2÷5=1.6; |
| (4)(+)×56=61; | (5)10÷×10=1000; | (6)603×39≈24000; |
| (7)4950÷51≈100; | (8):=; | (9)42÷(+)=36; |
| (10)3.2×1.25×0.25=1. |
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