9+17+34+12+99+123456=?
12+13+14+15+16+123456+17+18+19+20+78901234567890=
78901234691490 câu trả lời mình đó còn cách làm thì mk gửi sau nha
kích cho mk nhé
/-12/17/ . (-34/9)
\(\left|\frac{-12}{7}\right|.\frac{-34}{9}\)
= \(\frac{12}{7}.\frac{-34}{9}\)
= \(\frac{4.\left(-2\right)}{1.1}\)
= \(-8\)
\(\left|\frac{-12}{17}\right|.\left(\frac{-34}{9}\right)\)
= \(\frac{12}{17}.\left(\frac{-34}{9}\right)\)
= \(\frac{4.\left(-2\right)}{1.1}\)
= \(-8\)
\(\left|\frac{-12}{17}\right|.\left(\frac{-34}{9}\right)\)
= \(\frac{12}{17}.\left(\frac{-34}{9}\right)\)
= \(\frac{4.\left(-2\right)}{1.3}\)
= \(\frac{-8}{3}\)
14+6=?
15+5=?
17+6=?
123456+12=?
14+6= 20
15+5= 20
17+6= 23
123456+12= 123468
14 + 6 = 20
15 + 5 = 20
17 + 6 = 23
123456 + 12 = 123468
chúc vui vẻ
= 26/24 x 27/5 x2x34/9 x 2x2/17
= 13/12 x 27/5 x2 x34/9 x2 x 2/17
= 13/12 x2x2 x27/5 x 34/9 x2/17
= 13/3 x27/5 x 4/9
= 117/5x4/9
= 52/5
Bài 1: Rút gọn các phân số
14/28 , 33/99 , 12/80 , 50/150 , 45/9 , 81/72 , 34/68 ,
\(\dfrac{14}{28}=\dfrac{14:14}{28:14}=\dfrac{1}{2}\)
\(\dfrac{33}{99}=\dfrac{33:33}{99:33}=\dfrac{1}{3}\)
\(\dfrac{12}{80}=\dfrac{12:4}{80:4}=\dfrac{3}{20}\)
\(\dfrac{50}{150}=\dfrac{50:50}{150:50}=\dfrac{1}{3}\)
\(\dfrac{45}{9}=\dfrac{45:9}{9:9}=5\)
\(\dfrac{81}{72}=\dfrac{81:9}{72:9}=\dfrac{9}{8}\)
\(\dfrac{34}{68}=\dfrac{34:34}{68:34}=\dfrac{1}{2}\)
14/28=1/2
33/99=1/3
12/80=3/20
50/150=1/3
45/9=5
81/72=9/8
34/68=1/2
\(\dfrac{14}{28}=\dfrac{1}{2};\dfrac{33}{99}=\dfrac{11}{33};\dfrac{12}{80}=\dfrac{3}{20};\dfrac{50}{150}=\dfrac{1}{3};\dfrac{45}{9}=5;\dfrac{81}{72}=\dfrac{9}{8};\dfrac{34}{68}=\dfrac{1}{2}\)
Đúng ghi đ sai ghi s vào ô trống: a) 15/17 > 13/15 b) 9/7 < 11/9 c) 5/9 < 3/7 d) 12/17 = 24/34
+ giải thích = 1 tích
12 + 34 + 56 + 78 + 123 + 99 + 322 + 199 = ?
12 x 45 x 67 x 89 x 0 = ?
12 : 4 : 3 x 9 : 3 x 1259 = ?
12 + 34 + 56 + 78 + 123 + 99 + 322 + 199 = 1223
12 x 45 x 67 x 89 x 0 = 0
12 : 4 : 3 x 9 : 3 x 1259 = 3777
Tk nha
Số?
a) 34+99= ?+34 (24+8)+12=24+(8+?)
13+297=297+? 6+4+8=(6+?)+8
201+118=?+201 98+63+37=98+(63+?)
b)
9+?=9
61+?=61
?+0=87
?+10=10
a) 34 + 99 = 99 + 34 13 + 297 = 297 + 13 201 + 118 = 118 + 201 b) 9 + 0 = 9 61 + 0 = 61 |
(24 + 8) + 12 = 24 + (8 + 12) 8 + 6 + 4 = 8 + (6 + 4) 63 + 37 + 98 = (63 + 37) + 98
87 + 0 = 87 0 + 10 = 10 |
So sánh:
a) 28^12 và 8^17
b) 11^30 và 23^20
c) 8^5 và 34^7
d) 99^20 và 9999^10