题目内容
脱式计算.
| (4.2+4.2÷2.1)÷0.2 | 5.7×[29-(3.06+5.94)]. |
(1)(4.2+4.2÷2.1)÷0.2,
=(4.2+2)÷0.2,
=6.2÷0.2,
=31.
(2)5.7×[29-(3.06+5.94)],
=5.7×[29-9],
=5.7×20,
=114.
=(4.2+2)÷0.2,
=6.2÷0.2,
=31.
(2)5.7×[29-(3.06+5.94)],
=5.7×[29-9],
=5.7×20,
=114.
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