2个回答
2017-04-09
展开全部
(1)23.4-5.7-4.3, =23.4-(5.7+4.3), =23.4-10, =13.4; (2)(467+36×3)÷23, =(467+108)÷23, =575÷23, =25; (3)25×50×4×6, =(25×4)×(50×6), =100×300, =30000; (4)46×16+16×54, =(46+54)×16, =100×16, =1600; (5)14.9+3.7+5.1+6.3, =(14.9+5.1)+(3.7+6.3), =20+10, =30; (6)3800÷(1280-72×15), =3800÷(1280-1080), =3800÷200, =19; (7)1800-800÷25×16, =1800-32×16, =1800-512, =1288; (8)65×102, =65×(100+2), =6500+130, =6630; (9)99×48+48, =(99+1)×48, =100×48, =4800.
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