有理数简便计算乘法1.(-3/4)x(8-1 1/3-0.04)2.49 15/16 x (-8)3.(-370)x(-
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/13 21:04:49
有理数简便计算乘法
1.(-3/4)x(8-1 1/3-0.04)
2.49 15/16 x (-8)
3.(-370)x(-1/4)+0.25 x 24.5 + (-5 1/2)x(-2590)
1.(-3/4)x(8-1 1/3-0.04)
2.49 15/16 x (-8)
3.(-370)x(-1/4)+0.25 x 24.5 + (-5 1/2)x(-2590)
1.(-3/4)x(8-1 1/3-0.04)
=(-3/4)x(8-4/3-0.04)
=(-3/4)x8-(-3/4)x4/3-(-3/4)x0.04
=-6+1+0.03
=-4.97
2.49 15/16 x (-8)
=49x (-8)+15/16x (-8)
=-392-15/2
=-399-1/2
=-399 1/2
3.(-370)x(-1/4)+0.25 x 24.5 + (-5 1/2)x(-2590)
=(-370)x0.25+0.25 x 24.5 + (-5 1/2)x(-2590)
=(-370+24.5)x0.25 + (-5 1/2)x(-2590)
=(-345.5)x0.25 + (-5.5)x(-2590)
=-86.375+14245
=14158.625
=(-3/4)x(8-4/3-0.04)
=(-3/4)x8-(-3/4)x4/3-(-3/4)x0.04
=-6+1+0.03
=-4.97
2.49 15/16 x (-8)
=49x (-8)+15/16x (-8)
=-392-15/2
=-399-1/2
=-399 1/2
3.(-370)x(-1/4)+0.25 x 24.5 + (-5 1/2)x(-2590)
=(-370)x0.25+0.25 x 24.5 + (-5 1/2)x(-2590)
=(-370+24.5)x0.25 + (-5 1/2)x(-2590)
=(-345.5)x0.25 + (-5.5)x(-2590)
=-86.375+14245
=14158.625
有理数简便计算乘法1.(-3/4)x(8-1 1/3-0.04)2.49 15/16 x (-8)3.(-370)x(-
有理数乘法简便计算(1道)
(-1)x(-4分之5)x15分之8x(-3分之21x0x(-1)有理数乘法
有理数乘法,7道1.25x(-1 /1/7)x(-3.2)x(-7/8) (-12)x(-1 1/7)x(-3.2)x(
利用乘法公式进行计算:(1)(x+1)(x-1)(x平方+1)(x的4次方+1) (2)(3x+2)平方-(3x-5)平
有理数乘法计算有理数的乘法(1)8+(—0.5)×(—16)×4分之3 (2)(-三分之二)×1又三分之一×(-1-4分
1/4x+x^3-x^2 用简便方法计算(因式分解)
利用整式乘法公式计算(x-2)(x+2)-(x+1)(x-3)
整式乘法与因式分解计算:(x+1)(x²+1)(x的4次方+1)(x-1);(x-2y+1/3)².
(1+3x)(-1-3x)运用乘法公式怎么计算?
20%x+4分之1(x-1)=3x-(2x+50%) 简便计算?
原式=({[(6x 5 +5)x 4 +4]x 3 +3}x 2 +2)x+2002,计算6x的值1次乘法,计算(6x+