计算题:(1)(+7)+(-8)-(+3)-(-4);(2)-1 1 3 -2 1 3 ÷(- 3
计算题:(1)(+7)+(-8)-(+3)-(-4);(2)-113-213÷(-32)×(-3);(3)-36×(19-16-118);(4)-13-(1-0.5)×1...
计算题:(1)(+7)+(-8)-(+3)-(-4);(2)-1 1 3 -2 1 3 ÷(- 3 2 )×(-3);(3)-36×( 1 9 - 1 6 - 1 18 );(4)-1 3 -(1-0.5)× 1 3 ×[2-(-3) 2 ];(5)(-0.25)×1.25×(-4)×(-8);(6)(-1) 10 ×2+(-2) 3 ÷4.
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(1)(+7)+(-8)-(+3)-(-4) =7-8-3+4 =11-11 =0; (2)-1
=-1
=-1
=-6; (3)-36×(
=(-36)×
=-4+6+2 =-4+8 =4; (4)-1 3 -(1-0.5)×
=-1-
=-1+
=
(5)(-0.25)×1.25×(-4)×(-8) =(-0.25)×(-4)×[1.25×(-8)] =1×(-10) =-10; (6)(-1) 10 ×2+(-2) 3 ÷4 =1×2+(-8)÷4 =2-2 =0. |
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