8,431 : 0,25 + 8.431 : 0,2 + 8,431
= 8,431 \(\times\) 4 + 8,431 \(\times\) 5 + 8,431 \(\times\) 1
= 8,431 \(\times\) (4 + 5 + 1)
= 8,431 \(\times\) 10
= 84,31
y:0.25+y:0.2+y=2019
9.6 : 0.2 * 15.4 * 0.2 * 15.4 * 0.25 .
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30.8 : 0.5 * 7.7 : 0.125 * 5 * 6
150 - 40 × 20 × 5 × 0.5 × 0.25 × 0.2 - 5 - 0.1
82 chia 0.25 + 82 chia 0.2 + 82
Tính nhanh:
132 : 0.125 + 132 : 0.25 - 132 : 0.2 + 132 : 0.5 + 132
X+X:0.1+X:0.2+X:0.25=192
tìm x; x:0.25+x+x:0.2=120
19.8 ;0.2*44.44*2*13.2:0.25/3.3*88.88*0.5*6.6:0.125*5
150 - 40 × 20 × 5 × 0.5 × 0.25 × 0.2 - 5 - 0.1
các bạn giải tri tiết giup mik nhé
