计算:(1)-13+514-317-514+1267;(2)3.75-(-12)+(-423
问题详情
计算:
(1)-
(2)3.75-(-
(3)3
(4)(-4
(5)(-123)+3
(6)25×
(7)(-3)2÷2
(8)(-79)÷2
(9)[30-(
(10)(-1)3-(1-
(11)(
(12)-22-(1-
(13)99
(14)-36
(15)(-7)×(5)-90÷(-15)
(16)(-
参考答案
(1)-13+514-514-317+1267
=-13+957
=9821;
(2)3.75-(-12)+(-423)+(-0.5)+(-634)
=3.75+12-423-0.5-634
=3.75-634+12-0.5-423
=-3-423
=-723;
(3)325+(-278)+(-3512)+535+(-118)+5512
=325+535+(-278)+(-118)+(-3512)+5512
=9-4+2
=7;
(4)(-458)+(-3.75)+(-238)+(-314)
=(-458)+(-238)+(-314)+(-3.75)
=-7-7
=-14;
(5)(-123)+313+(-414)+(+123)+(-13)+(-34)
=(-123)+(+123)+313+(-13)+(-414)+(-34)
=0+3-5
=-2;
(6)25×34+(-25)×(-14)
=25×(34+14)
=25;
(7)(-3)2÷214×(-23)2+4-22×(-13);
=9×49×49+4-4×(-13)
=169+4+43
=649;
(8)(-79)÷214+49×(-29)
=(-79)×49+49×(-29)
=(-79-29)×49
=-108×49
=-48;
(9)[30-(79+56-1112)×36]÷(-5)
=[30-(79×36+56×36-1112×36)]÷(-5)
=[30-28-30+33]÷(-5)
=5÷(-5)
=-1;
(10)(-1)3-(1-12)÷3×[3-(-3)2]
=-1-12×13×[3-9]
=-1-12×13×[3-6]
=-1+1
=0;
(11)(14+112-718-136)÷136-2×(-13)
=(14+112-718-136)×36+23
=14×36+112×36-718×36-136×36+23
=9+3-14-1+23
=-73;
(12)-22-(1-15×0.2)÷(-2)3
=-22-(1-125)÷(-8)
=-22-2425×(-18)
=-22+325
=-212225;
(13)991718×(-9)
=(100-118)×(-9)
=100×(-9)-118×(-9)
=-900+12
=-89912;
(14)-36911÷9
=-36×19-911×19
=-4111;
(15)(-7)×(+5)-90÷(-15)
=-35+6
=-29;
(16)(-23)×(-18)-(+0.25)×(-6)÷(-5)
=12-(-1.5)÷(-5)
=12-0.3
=11.7.