题目内容
【题目】用自己喜欢的方法进行脱式计算.
(1)4.28+(5.72﹣3.99)
(2)+ ÷6
(3)4.05﹣2.74﹣1.26
(4)98×0.9+9.8
(5)7﹣ × ﹣
(6)×[1÷( + )]
【答案】(1)解: 4.28+(5.72﹣3.99)
=(4.28+5.72)﹣3.99
=10﹣3.99
=6.01
(2)解: + ÷6
= + ×
= +
=
(3)解: 4.05﹣2.74﹣1.26
=4.05﹣(2.74+1.26)
=4.05﹣4
=0.05
(4)解: 98×0.9+9.8
=9.8×(9+1)
=9.8×10
=98
(5)解: 7﹣ × ﹣
=7﹣ ﹣
=7﹣( + )
=7﹣1
=6
(6)解: ×[1÷( + )]
= ×[1÷ ]
= ×
=
练习册系列答案
相关题目
【题目】计算,能简算的要用简便方法计算.
125×3.2×2.5 | 6 ×0.125+ ×2 +12.5% | (2 +1 )÷(2 ﹣1 ) | 62.5+37.5÷7.5×2.4 |
36×( ﹣ + ) | + + + | ×[1÷( ﹣ )] | × ÷ ﹣ |