六年级数学题,急急急过程答案谢谢!
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(1)222×29/100-333×4%+666×9%
=111×(2×29/100-3×4/100+6×9/100)
=111×(58/100-12/100+54/100)
=111×1
=111
(2)9×11×[(1/(9×10)+1/(10×11)]
=11/10+9/10
=20/10
=2
解方程
(1)原式两边同乘以7得
56-34x=22
34x=56-22
34x=34
x=1
(2)原式化简得
2+3x=4.5×4
3x=18-2
3x=16
x=16/3
即5又3分之1
(3)原式化为分数得
0.75-2x=0.625
2x=0.75-0.625
2x=0.125
x=0.0625
=111×(2×29/100-3×4/100+6×9/100)
=111×(58/100-12/100+54/100)
=111×1
=111
(2)9×11×[(1/(9×10)+1/(10×11)]
=11/10+9/10
=20/10
=2
解方程
(1)原式两边同乘以7得
56-34x=22
34x=56-22
34x=34
x=1
(2)原式化简得
2+3x=4.5×4
3x=18-2
3x=16
x=16/3
即5又3分之1
(3)原式化为分数得
0.75-2x=0.625
2x=0.75-0.625
2x=0.125
x=0.0625
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