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Tính nhanh:
36 x 28 + 4 x 9 x 82 + 64 x 69 + 8 x 41 x 8
= 36 x 28 + ( 4 x 9 ) x 82 + 64 x 69 + ( 8 x 8 ) x 41
= 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
= 36 x ( 28 + 82 ) + 64 x ( 69 + 41 )
= 36 x 110 + 64 x 110
= 110 x ( 36 + 64 )
= 110 x 100
= 11000
^^ Học tốt nhé!
A = \(\dfrac{13}{50}\) + 9% + 41/100 + 0,24
A = 0,26 + 0,09 + 0,41 + 0,24
A = (0,26 + 0,24) + ( 0,09 + 0,41)
A = 0,5 + 0,5
A = 1
\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)
\(\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\)
\(\dfrac{13}{50}+\left(\dfrac{9+41+24}{100}\right)\)
\(\dfrac{13}{50}+\dfrac{74}{100}\)
\(\dfrac{26}{100}+\dfrac{74}{100}=\dfrac{100}{100}=1\)
\(\dfrac{13}{15}+9\%+\dfrac{41}{100}+0,24=\dfrac{13}{15}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{6}{25}=\left(\dfrac{13}{15}+\dfrac{6}{25}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)=\dfrac{83}{75}+\dfrac{1}{2}=\dfrac{241}{150}\)
\(\dfrac{13}{15}+9\%+\dfrac{41}{100}+0,24\)
\(=\dfrac{13}{15}+\left(\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\right)\)
\(=\dfrac{13}{15}+\dfrac{74}{100}\)
\(=\dfrac{260}{300}+\dfrac{222}{300}\)
\(=\dfrac{482}{300}=\dfrac{241}{150}\)
= 26/100 + 9/100 + 41/100 + 24/100
= \(\dfrac{26+9+41+24}{100}=\dfrac{100}{100}=1.\)
Chúc bạn HT
tick mình nha!
\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)
\(=\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{6}{25}\)
\(=\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{12}{50}\)
\(=\left(\dfrac{13}{50}+\dfrac{12}{50}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)\)
\(=\dfrac{25}{50}+\dfrac{50}{100}\)
\(=\dfrac{25}{50}+\dfrac{25}{50}\)
\(=\dfrac{50}{50}=1\)
\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)
\(=\dfrac{26}{100}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\)
\(=\left(\dfrac{26}{100}+\dfrac{24}{100}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)\)
\(=\dfrac{50}{100}+\dfrac{50}{100}=\dfrac{1}{2}+\dfrac{1}{2}=\dfrac{2}{2}=1\)
mình ko ghi đề bài nha
=26%+9%+41%+24%
=(26%+24%)+(9%+41%)
=50%+50%
=100%
16y-42
hình như đây ko phải 1 bài toán lớp 5[khó so với lớp 5]