tinh nhanh:cau 1 13/50:9% + 41/100+ 0.24: cau 2:1.25*0.25*0.25*8*4*2 giup mk vs a 17/10/2021 Bởi Brielle tinh nhanh:cau 1 13/50:9% + 41/100+ 0.24: cau 2:1.25*0.25*0.25*8*4*2 giup mk vs a
Câu 1: 13/50:9%+41/100+0,2413/50:9%+41/100+0,24 =13/50:9/100+41/100+24/100=13/50:9/100+41/100+24/100 =13/50×100/9+41/100+24/100=13/50×100/9+41/100+24/100 =13×10050×9+41+24100=13×10050×9+41+24100 =269+65100=269+65100 =637180. Câu 2: 1,25×0,25×0,25×8×4×21,25×0,25×0,25×8×4×2 =(1,25×4)×(0,25×8)×(0,25×2)=(1,25×4)×(0,25×8)×(0,25×2) =5×2×0,5=5×2×0,5 =10×0,5=10×0,5 =5 CHÚC BẠN HỌC TỐT Bình luận
Câu 1: $\dfrac{13}{50}:9\%+\dfrac{41}{100}+0,24$ $=\dfrac{13}{50}:\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}$ $=\dfrac{13}{50}×\dfrac{100}{9}+\dfrac{41}{100}+\dfrac{24}{100}$ $=\dfrac{13×100}{50×9}+\dfrac{41+24}{100}$ $=\dfrac{26}{9}+\dfrac{65}{100}$ $=\dfrac{637}{180}$ Câu 2: $1,25×0,25×0,25×8×4×2$ $=(1,25×4)×(0,25×8)×(0,25×2)$ $=5×2×0,5$ $=10×0,5$ $=5$ Bình luận
Câu 1:
13/50:9%+41/100+0,2413/50:9%+41/100+0,24
=13/50:9/100+41/100+24/100=13/50:9/100+41/100+24/100
=13/50×100/9+41/100+24/100=13/50×100/9+41/100+24/100
=13×10050×9+41+24100=13×10050×9+41+24100
=269+65100=269+65100
=637180.
Câu 2:
1,25×0,25×0,25×8×4×21,25×0,25×0,25×8×4×2
=(1,25×4)×(0,25×8)×(0,25×2)=(1,25×4)×(0,25×8)×(0,25×2)
=5×2×0,5=5×2×0,5
=10×0,5=10×0,5
=5
CHÚC BẠN HỌC TỐT
Câu 1:
$\dfrac{13}{50}:9\%+\dfrac{41}{100}+0,24$
$=\dfrac{13}{50}:\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}$
$=\dfrac{13}{50}×\dfrac{100}{9}+\dfrac{41}{100}+\dfrac{24}{100}$
$=\dfrac{13×100}{50×9}+\dfrac{41+24}{100}$
$=\dfrac{26}{9}+\dfrac{65}{100}$
$=\dfrac{637}{180}$
Câu 2:
$1,25×0,25×0,25×8×4×2$
$=(1,25×4)×(0,25×8)×(0,25×2)$
$=5×2×0,5$
$=10×0,5$
$=5$