Nhanh ! Nhanh ! Giúp mình với
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98200 - 5689 x 4 = 98200 - 22756 = 75444
80.000 + (5980 + 4700) = 80.000+75444=90680
10208 x 3 + 47654 = 30624 + 47654 = 78278
3986 + 4695 x 7 = 8681 x 7 = 60767
98200-5689\(\times\)4=98200-22756=75444
80000+(5980-4700)=80000+12801=92801
10208\(\times\)3+47654=30624+47654=78278
3986+4695\(\times\)7=3986+32865=36851
mà bạn thi hả?
chỉ giúp nốt câu này tthui mà mấy câu này toàn kiến thức bạn hok rùi mà
Bài 2:
1.
$=(\frac{1}{7}+\frac{2}{7}+\frac{4}{7})+(\frac{3}{11}+\frac{8}{11})+2010$
$=\frac{7}{7}+\frac{11}{11}+2010=1+1+2010=2012$
2.
$=(\frac{2}{3}-\frac{2}{3})+(\frac{-3}{4}+\frac{3}{4})+(\frac{4}{5}-\frac{4}{5})+(\frac{-5}{6}+\frac{5}{6})+(\frac{6}{7}-\frac{6}{7})+(\frac{-7}{8}+\frac{7}{8})+\frac{1}{2012}$
$=0+0+0+0+0+0+\frac{1}{2012}=\frac{1}{2012}$
3.
$=\frac{1}{5-4}{4.5}+\frac{6-5}{5.6}+\frac{7-6}{6.7}+...+\frac{1}{20-19}{19.20}$
$=\frac{1}{4}-\frac{1}{5}+\frac{1}{5}-\frac{1}{6}+\frac{1}{6}-\frac{1}{7}+..+\frac{1}{19}-\frac{1}{20}$
$=\frac{1}{4}-\frac{1}{20}=\frac{1}{5}$
4.
\(=182\left[\frac{1+\frac{1}{5}-\frac{2}{7}+\frac{5}{13}}{2(1+\frac{1}{5}-\frac{2}{7}+\frac{5}{13})}: \frac{4(1-\frac{1}{33}-\frac{1}{57}+\frac{1}{7000})}{1-\frac{1}{33}-\frac{1}{57}+\frac{1}{7000}}\right]:\frac{10101\times 91}{10101\times 80}\)
$=182(\frac{1}{2}:4):\frac{91}{80}=182\times \frac{1}{8}\times \frac{80}{91}$
$=\frac{91\times 2\times 80}{8\times 91}=\frac{160}{8}=20$
Question 8
2 She has yellow hair and black eyes
3 My father likes growing many flowers in the garden
4 Many people are going o the pagoda in order to have a happy year for their family this weekend
Question 9
1 Her family has 6 people
2 My sister really likes playing football on the weekend
3 They never make a cake on the weekend
4 I would like you to go to the pagoda with me
a: \(=400\cdot35=14000\)
b: \(=17\cdot85-120=1700-120=1580\)
\(\dfrac{1}{4}< \dfrac{a}{b}< \dfrac{2}{5}\)
=> a/b có thể bằng một trong những giá trị sau: 1/3 , 3/11, 4/11,...
Cảm ơn . Bây giờ tớ gửi Coin cho cậu