A-A+
能简算的要简算.35+710+2578-(38+25)2-1519-41978+16-112
问题详情
能简算的要简算. (1)35+710+25,3 5+ 7 10+ 2 5 7 8-( 3 8+ 2 5)
2-15 19- 4 19 7 8+ 1 6- 11 24 5 8+ 9 17+ 3 8+ 8 17
13 7- 5 12- 7 12
3-(1 7 5 9+ 2 3- 15 18 4 5-( 7 15- 4 9) 6 11+ 11 15+ 5 11- 6 15.
参考答案
=35+25+710,
=1+710,
=1710;
(2)78-(38+25),
=78-38-25,
=12-25,
=110;
(3)2-1519-419,
=2-(1519+419),
=2-1,
=1;
(4)78+16-1124,
=2524-1124,
=712;
(5)58+917+38+817,
=(58+38)+(917+817),
=1+1,
=2;
(6)137-512-712,
=137-(512+712),
=137-1,
=37;
(7)3-(17,
=3-156,
=25556;
(8)59+23-1518,
=119-1518,
=718;
(9)45-(715-49),
=45-715+49,
=13+49,
=79;
(10)611+1115+511-615,
=(611+511)+(1115-615),
=1+13,
=113.考点: