\(a:0,1+a:0,2+a:0,5+a:0,25+a:0,125=290\)
\(a\times10+a\times5+a\times2+a\times4+a\times8=290\)
\(a\times\left(10+5+2+4+8\right)=290\)
\(a\times29=290\)
\(a=\dfrac{290}{29}\)
\(a=10\)
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\(a:0,1+a:0,2+a:0,5+a:0,25+a:0,125=290\)
\(a\times10+a\times5+a\times2+a\times4+a\times8=290\)
\(a\times\left(10+5+2+4+8\right)=290\)
\(a\times29=290\)
\(a=\dfrac{290}{29}\)
\(a=10\)
tính nhanh:
1/90:0.25+1/90:0.2+1/90:0.5+1/90:0.125-1/90:0.1
150 - 40 × 20 × 5 × 0.5 × 0.25 × 0.2 - 5 - 0.1
19.8 ;0.2*44.44*2*13.2:0.25/3.3*88.88*0.5*6.6:0.125*5
9.6 : 0.2 * 15.4 * 0.2 * 15.4 * 0.25 .
--------------------------------------------
30.8 : 0.5 * 7.7 : 0.125 * 5 * 6
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125 - 1/10 : 0.1
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
Tính nhanh:
132 : 0.125 + 132 : 0.25 - 132 : 0.2 + 132 : 0.5 + 132