初中口算
@岑黎379：初中口算题40道急需 - 作业帮
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：80道口算速求(初中简单) - 作业帮
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：初一有理数口算题100道求求大家了,给小弟100道口算题吧,做起来越方便越好的那种口算, - 作业帮
陆轻19320721784…… [答案] 2 * 4 = ( ) 8 - 1 = ( ) 10 + 54 = ( ) 64 - 5 = ( ) 2 + 64 = ( ) 1 * 8 = ( ) 22 - 7 = ( ) 39 - 23 = ( ) 82 - 78 = ( ) 3 * 5 = ( ) 47 + 25 = ( ) 57 + 43 = ( ) 8 * 1 = ( ) 5 + 28 = ( ) 5 + 43 = ( ) 62 - 60 = ( ) 2 * 8 = ( ) 2 + 35 = ( ) 68 - 15 = ( ) 2 * 8 = ( ) 1 * 7 = ( ) 17 + 7 = ( ) 3 * 9 ...
@岑黎379：初中口算练习题 - 作业帮
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：初中数学智慧口算题 - 作业帮
陆轻19320721784…… [答案] 7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320*40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =...
@岑黎379：初中负数乘法口算题300道负数口算题,不要太简单, - 作业帮
陆轻19320721784…… [答案] 39+[-23]+0+[-16]= [-18]+29+[-52]+60= [-3]+[-2]+[-1]+0+1+2= [-301]+125+301+[-75]= [-1]+[-1/2]+[+3/4]+[-1/4]= [-7/2]+[+5/6]+[-0.5]+4/5+19/6= [-26.54]+[-6.14]+18.54+6.14= 1.125+[-17/5]+[-1/8]+[-0.6]= 0.75+[-11/4]+0.125+12又5/7+[-3/8]= [-4/9]+[-3/5]+[+11/...
@岑黎379：求100道有理数混合运算口算题(初中水平)最好有答案,谢谢!没有也不勉强!(*^__^*) 嘻嘻 - 作业帮
陆轻19320721784…… [答案] 102*(-4.5)-(-3)*(-5) ÷2 7.8*6.9+2.2*6.9 (-2)+2-(-52)*(-1) *5+87÷(-3)*(-1) 5.6*0.258*(20-1.25) (-7.1) *〔(-3)*(-5)〕÷2 -2.5*(-4.8)*(0.09)÷(-0.27) 127+352+73+44*(-2) 89*276+(-135)-33 25*71+75÷29 -88÷(-2) 243+89+111+57 9405-2940÷28*21 920-...
@岑黎379：你知道怎样快速口算?急!明天考初中!不能用笔算!只能用口算! - 作业帮
陆轻19320721784…… [答案] 比如:256简化成250,除以10,乘以8, 要是几几折就先除10,乘完之后,再把原数除以20,得到后,加上前面算的就行 多找25*4 125*8 什么加1
@岑黎379：初中数学智慧口算题 -
陆轻19320721784…… 7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320*40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 11x+64-2x=...
@岑黎379：初中负数乘法口算题 -
陆轻19320721784…… 39+[-23]+0+[-16]= [-18]+29+[-52]+60= [-3]+[-2]+[-1]+0+1+2= [-301]+125+301+[-75]= [-1]+[-1/2]+[+3/4]+[-1/4]= [-7/2]+[+5/6]+[-0.5]+4/5+19/6= [-26.54]+[-6.14]+18.54+6.14= 1.125+[-17/5]+[-1/8]+[-0.6]= 0.75+[-11/4]+0.125+12又5/7+[-3/8]= [-4/9]+[-...
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：80道口算速求(初中简单) - 作业帮
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：初一有理数口算题100道求求大家了,给小弟100道口算题吧,做起来越方便越好的那种口算, - 作业帮
陆轻19320721784…… [答案] 2 * 4 = ( ) 8 - 1 = ( ) 10 + 54 = ( ) 64 - 5 = ( ) 2 + 64 = ( ) 1 * 8 = ( ) 22 - 7 = ( ) 39 - 23 = ( ) 82 - 78 = ( ) 3 * 5 = ( ) 47 + 25 = ( ) 57 + 43 = ( ) 8 * 1 = ( ) 5 + 28 = ( ) 5 + 43 = ( ) 62 - 60 = ( ) 2 * 8 = ( ) 2 + 35 = ( ) 68 - 15 = ( ) 2 * 8 = ( ) 1 * 7 = ( ) 17 + 7 = ( ) 3 * 9 ...
@岑黎379：初中口算练习题 - 作业帮
陆轻19320721784…… [答案] 1.(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2.(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3.8+2-8+2 4.25*4/25*4 5.7.26-(5.26-1.5) 6.286+198 7.314-202 8.526+301 9.223-99 10.6.25+3.85-2.125+3.875 11.9-2456*21 12.0.5/11.5-4*2...
@岑黎379：初中数学智慧口算题 - 作业帮
陆轻19320721784…… [答案] 7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320*40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =...
@岑黎379：初中负数乘法口算题300道负数口算题,不要太简单, - 作业帮
陆轻19320721784…… [答案] 39+[-23]+0+[-16]= [-18]+29+[-52]+60= [-3]+[-2]+[-1]+0+1+2= [-301]+125+301+[-75]= [-1]+[-1/2]+[+3/4]+[-1/4]= [-7/2]+[+5/6]+[-0.5]+4/5+19/6= [-26.54]+[-6.14]+18.54+6.14= 1.125+[-17/5]+[-1/8]+[-0.6]= 0.75+[-11/4]+0.125+12又5/7+[-3/8]= [-4/9]+[-3/5]+[+11/...
@岑黎379：求100道有理数混合运算口算题(初中水平)最好有答案,谢谢!没有也不勉强!(*^__^*) 嘻嘻 - 作业帮
陆轻19320721784…… [答案] 102*(-4.5)-(-3)*(-5) ÷2 7.8*6.9+2.2*6.9 (-2)+2-(-52)*(-1) *5+87÷(-3)*(-1) 5.6*0.258*(20-1.25) (-7.1) *〔(-3)*(-5)〕÷2 -2.5*(-4.8)*(0.09)÷(-0.27) 127+352+73+44*(-2) 89*276+(-135)-33 25*71+75÷29 -88÷(-2) 243+89+111+57 9405-2940÷28*21 920-...
@岑黎379：你知道怎样快速口算?急!明天考初中!不能用笔算!只能用口算! - 作业帮
陆轻19320721784…… [答案] 比如:256简化成250,除以10,乘以8, 要是几几折就先除10,乘完之后,再把原数除以20,得到后,加上前面算的就行 多找25*4 125*8 什么加1
@岑黎379：初中数学智慧口算题 -
陆轻19320721784…… 7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320*40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 11x+64-2x=...
@岑黎379：初中负数乘法口算题 -
陆轻19320721784…… 39+[-23]+0+[-16]= [-18]+29+[-52]+60= [-3]+[-2]+[-1]+0+1+2= [-301]+125+301+[-75]= [-1]+[-1/2]+[+3/4]+[-1/4]= [-7/2]+[+5/6]+[-0.5]+4/5+19/6= [-26.54]+[-6.14]+18.54+6.14= 1.125+[-17/5]+[-1/8]+[-0.6]= 0.75+[-11/4]+0.125+12又5/7+[-3/8]= [-4/9]+[-...
