发布网友 发布时间:2024-10-11 22:50
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热心网友 时间:2024-10-15 09:35
(1)46×8-120÷15, =368-8, =360; (2) 3 4 +2 9 17 + 1 4 +3 8 17 , =( 3 4 + 1 4 )+(2 9 17 + 3 8 17 ), =1+6, =7; (3)(12.5×8-40)÷0.6, =(100-40)÷0.6, =60÷0.6, =100; (4) 2 3 +( 4 5 - 2 3 )× 5 3 , = 2 3 + 2 15 × 5 3 , = 2 3 + 2 9 , = 8 9 ; (5)3.4×2.77+0.23×3.4 =(2.77+0.23)×3.4, =3×3.4, =10.2; (6)( 5 12 + 1 9 + 3 8 )×72 = 5 12 × 72+ 1 9 ×72+ 3 8 ×72, =30+8+27, =65.