题目内容
【题目】用自己喜欢的方法计算。
(1)6.75+2.98-1.75 (2)1.25×9.4+2.7
(3)8.95×99+8.95 (4)5.7×3.8+4.3×3.8
【答案】(1)7.98;(2)14.45
(3)895;(4)38
【解析】
(1)6.75+2.98-1.75
=6.75-1.75+2.98
=5+2.98
=7.98
(2)1.25×9.4+2.7
=11.75+2.7
=14.45
(3)8.95×99+8.95
=8.95×99+8.95×1
=8.95×(99+1)
=8.95×100
=895
(4)5.7×3.8+4.3×3.8
=(5.7+4.3)×3.8
=10×3.8
=38
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