[ 2^2.5.3^3 - ( 5^2+2^3+70 ) ] : 3^2 - 10
Tinh nhanh neu co the
Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
Tinh nhanh neu co the
2003 - { 53 . 2 : [ 20140 + ( 18-9)2 ] +3 } =
thuc hien phep tinh (Tinh nhanh neu co the)
(-5/12+7/4-3/8)-|4 va 1/2 -7 va 1/2|-( 1/4-5/2)
Tính:
(\(2^2.5.3^3-5^2.2^3+20\)) \(3^2-10\)
\(\left(3^{10}.11+3^{10}.5\right)\left(3^9.2^4\right)\)
a: Ta có: \(\left(2^2\cdot5\cdot3^3-5^2\cdot2^3+20\right)\cdot3^2-10\)
\(=\left(4\cdot5\cdot27-25\cdot8+20\right)\cdot9-10\)
\(=\left(540-200+20\right)\cdot9-10\)
\(=3240-10=3230\)
Tinh gia tri cac bieu thuc sau (tinh nhanh neu co the)
a,150 +50:5-2.32
b.4.23-34:33=252:52
c,17.12.25+51.2.5+85.14
a, 150+50:5-2.32
=150+10-2.9
=150+10-18
=160-18
=142
b,4.23--34:33=252:52
=4.8-3(4--3)=625:25
=32-31=25
32-3=25
\(\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}.\frac{\frac{3}{4}-\frac{3}{16}-\frac{3}{64}-\frac{3}{264}}{1-\frac{1}{4}-\frac{1}{16}-\frac{1}{64}}+\frac{5}{8}\)
tinh nhanh neu co the
\(\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}\cdot\frac{\frac{3}{4}-\frac{3}{16}-\frac{3}{64}-\frac{3}{264}}{1-\frac{1}{4}-\frac{1}{16}-\frac{1}{64}}+\frac{5}{8}\)
\(=\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{2\left(\frac{1}{3}-\frac{1}{7}-\frac{1}{13}\right)}\cdot\frac{\frac{3}{4}\left(1-\frac{1}{4}-\frac{1}{16}-\frac{1}{64}\right)}{1-\frac{1}{4}-\frac{1}{16}-\frac{1}{64}}\)\(+\frac{5}{8}\)
\(\frac{1}{2}\cdot\frac{3}{4}+\frac{5}{8}=\frac{3}{8}+\frac{5}{8}=1\)
Tinh nhanh neu co the:
\(2-\dfrac{2}{3+\dfrac{1}{2}}\)
\(\dfrac{1-\dfrac{1}{\dfrac{3}{4}+1}}{3}\)
a)\(2-\dfrac{2}{3+\dfrac{1}{2}}=2-\dfrac{2}{\dfrac{7}{2}}=\dfrac{10}{7}\)
b)\(\dfrac{1-\dfrac{1}{\dfrac{3}{4}+1}}{3}=\dfrac{1-\dfrac{1}{\dfrac{4}{7}}}{3}=-\dfrac{\dfrac{3}{4}}{3}=-\dfrac{1}{4}\)
thuc hien phep tinh (tinh nhanh neu co the)
a. 40{[ 11+(26-3^2)]/2}
8 mu 2 chia 9 cong 50 chia 2 tru ba mu ba nhan 3 mu 0
(tinh nhanh neu co the)
8^2:9+50-3^3x3^0
=64:9+50-27x1
=....
(tự tính nha mk thấy đề sai sai hay sao ý)
THÔNG CẢM
ỦNG HỘ MK 1 TÍCH ĐI mK BỊ TRỪ 20 ĐIỂM RỒI cảm ơn .mk tích lại cho
Thuc hien phep tinh hop li(neu co the):
1) 69 .113 - 27. 69 + 69 .14 + 31
2) 90 -(22. 25 - 32. 7)
3) 720 - {40.[(120 - 70) :25 + 23]}
4) 2345 - 1000 :[19 - 2(21 - 18)2]
5) (-23) + 13 + (-17) + 57
6) (-123) + |-13| + (-7)
7) - |-33| +(-15)+ 20 - |45 - 40| - 57