计算下面各题,能简算的要用简便方法计算. 23.4-5.7-4.3 (467+36×3)÷23 25×50×4×6 46×16+1
计算下面各题,能简算的要用简便方法计算.23.4-5.7-4.3(467+36×3)÷2325×50×4×646×16+16×5414.9+3.7+5.1+6.33800...
计算下面各题,能简算的要用简便方法计算. 23.4-5.7-4.3 (467+36×3)÷23 25×50×4×6 46×16+16×54 14.9+3.7+5.1+6.3 3800÷(1280-72×15) 1800-800÷25×16 65×102 99×48+48.
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(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.
=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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