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【七年级数学计算题及答案100道速!】
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七年级数学计算题及答案100道
速!优质解答
1.3/7 × 49/9 - 4/3 2.8/9 × 15/36 + 1/27 3.12× 5/6 – 2/9 ×3 4.8× 5/4 + 1/4 5.6÷ 3/8 – 3/8 ÷6 6.4/7 × 5/9 + 3/7 × 5/9 7.5/2 -( 3/2 + 4/5 ) 8.7/8 + ( 1/8 + 1/9 ) 9.9 × 5/6 + 5/6 10.3/4 ×... - 追答:
- (1):(-8)-(-15)+(-9)-(-12) =-8+15-9+12 =10 (2):(-40)+29-(-15)-|-24| =-21+15-24 =-30 (3):(2/3)-(1/8)-(-1/3)+(-3/8) =(2/3)-(-1/3)-((1/8)-(3/8)) =1+(1/4) =5/4 (4):0.5+(-1/4)-(-2.75)+(1/2) =0.5+(1/2)+((-1/4)+2.75) =1+2.5 =3.5 (5):(-2/5)+(-5/6)-(-4.5)-0.6 =(-2/5)-0.6-5/6+4.5 =-1+(16/6) =16/6 (6):(-2/3)+(-1/6)-(-1/4)-(1/2) =(-2/3)-(1/6)+(1/4)-(1/2) =-13/12 (7):(-3/3)乘(-1/2)*(-8/15) =-1*(-1/2)*(-8/15) =-4/15 (8):(-0.1)除以(1/2)*(1000) =-0.2*1000 =-200 (9):(-18)除以2.25乘4/9除以(-16) =-8*(4/9)/(-16) =-(32/9)/(-16) =2/9 (10):[(3/4)-(17/36)+(7/12)]乘|-36| =36-17+21 =40 (11):(504/11)除以9 =(504/11)*(1/9) =56/11 (12):(-5)乘(-27/7)+(-7)乘(-27/7)+12乘(-27/7) =((-5)+(-7)+12))*(-27/7) =0*(-27/7) =0 答案肯定对 http://wenku.baidu.com/search?word=%C6%DF%C4%EA%BC%B6%C9%CF%B2%E1%CA%FD%D1%A7&lm=0&od=0 这样的问题可以到百度文库中去找,很方便的。 希望你能够采纳。
速!
优质解答
- 追答:
- (1):(-8)-(-15)+(-9)-(-12) =-8+15-9+12 =10 (2):(-40)+29-(-15)-|-24| =-21+15-24 =-30 (3):(2/3)-(1/8)-(-1/3)+(-3/8) =(2/3)-(-1/3)-((1/8)-(3/8)) =1+(1/4) =5/4 (4):0.5+(-1/4)-(-2.75)+(1/2) =0.5+(1/2)+((-1/4)+2.75) =1+2.5 =3.5 (5):(-2/5)+(-5/6)-(-4.5)-0.6 =(-2/5)-0.6-5/6+4.5 =-1+(16/6) =16/6 (6):(-2/3)+(-1/6)-(-1/4)-(1/2) =(-2/3)-(1/6)+(1/4)-(1/2) =-13/12 (7):(-3/3)乘(-1/2)*(-8/15) =-1*(-1/2)*(-8/15) =-4/15 (8):(-0.1)除以(1/2)*(1000) =-0.2*1000 =-200 (9):(-18)除以2.25乘4/9除以(-16) =-8*(4/9)/(-16) =-(32/9)/(-16) =2/9 (10):[(3/4)-(17/36)+(7/12)]乘|-36| =36-17+21 =40 (11):(504/11)除以9 =(504/11)*(1/9) =56/11 (12):(-5)乘(-27/7)+(-7)乘(-27/7)+12乘(-27/7) =((-5)+(-7)+12))*(-27/7) =0*(-27/7) =0 答案肯定对 http://wenku.baidu.com/search?word=%C6%DF%C4%EA%BC%B6%C9%CF%B2%E1%CA%FD%D1%A7&lm=0&od=0 这样的问题可以到百度文库中去找,很方便的。 希望你能够采纳。
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