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用简便方法计算.12%301×79125×72×4728×79十272×798.59+2.57+3.43+5.4749.62+27.17-19.621546-(546-239)
题目详情
用简便方法计算.12% 301×79 125×72×4 728×79十272×79 8.59+2.57+3.43+5.47 49.62+27.17-19.62 1546-(546-239) |
301×79
125×72×4
728×79十272×79
8.59+2.57+3.43+5.47
49.62+27.17-19.62
1546-(546-239)
301×79
125×72×4
728×79十272×79
8.59+2.57+3.43+5.47
49.62+27.17-19.62
1546-(546-239)
301×79
125×72×4
728×79十272×79
8.59+2.57+3.43+5.47
49.62+27.17-19.62
1546-(546-239)
301×79
125×72×4
728×79十272×79
8.59+2.57+3.43+5.47
49.62+27.17-19.62
1546-(546-239)
▼优质解答
答案和解析
(1)301×79,
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239. (1)301×79,
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239. (1)301×79,
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239. (1)301×79,
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239.
(1)301×79, =(300+1)×79, =300×79+1×79, =23700+79, =23779; (2)125×72×4, =(125×4)×72, =500×72, =36000; (3)728×79十272×79, =79×(728+272), =79×1000, =79000; (4)8.59+2.57+3.43+5.47, =8.59+(2.57+3.43)+5.47, =8.59+6+5.47, =20.06; (5)49.62+27.17-19.62, =49.62-19.62+27.17, =30+27.17, =57.17; (6)1546-(546-239), =1546-546+239, =1000+239, =1239. |
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239.
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239.
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239.
=(300+1)×79,
=300×79+1×79,
=23700+79,
=23779;
(2)125×72×4,
=(125×4)×72,
=500×72,
=36000;
(3)728×79十272×79,
=79×(728+272),
=79×1000,
=79000;
(4)8.59+2.57+3.43+5.47,
=8.59+(2.57+3.43)+5.47,
=8.59+6+5.47,
=20.06;
(5)49.62+27.17-19.62,
=49.62-19.62+27.17,
=30+27.17,
=57.17;
(6)1546-(546-239),
=1546-546+239,
=1000+239,
=1239.
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