Các câu hỏi tương tự
tính hợp lí nếu có thể
(-17) + 42 +(-183)+58
125.( -21)+21.225
37.(13-5)-13.(37-5)
25-25.[23+7.(-59+56)]+l-12l:(-4)
tính nhanh
4+7+10+13+16+19+5+9+13+17+21+25
Tính :
2 . 17 . 12 + 4 . 6 . 21 + 8 . 3 . 62
37 . 24 + 37 . 76 + 63 . 79 + 63 . 21
24 . 5 - [131 [(13 - 4)2]
21 . 64 - 34 . 21 + 30 . 79
nhanh gấp lắm nha các bn !
4+7+10+13+16+19+5+9+13+17+21+25
Tính hợp lí
1) (dfrac{7}{-18}+dfrac{-5}{12}) -dfrac{13}{-18}
2) dfrac{-13}{17}+(dfrac{13}{-21}+dfrac{-4}{17})
3) ( dfrac{13}{-10}-dfrac{-4}{13})+dfrac{11}{-10}
4) dfrac{13}{17}timesdfrac{4}{-5}+dfrac{13}{17}timesdfrac{-3}{4}
5) dfrac{-5}{12}timesdfrac{7}{-17}timesdfrac{9}{-20}
6) dfrac{5}{9}timesdfrac{11}{23}+ dfrac{11}{23}timesdfrac{17}{9}-dfrac{13}{9}timesdfrac{11}{23}
Đọc tiếp
Tính hợp lí
1) \((\)\(\dfrac{7}{-18}\)+\(\dfrac{-5}{12}\)) -\(\dfrac{13}{-18}\)
2) \(\dfrac{-13}{17}\)+(\(\dfrac{13}{-21}\)+\(\dfrac{-4}{17}\))
3) ( \(\dfrac{13}{-10}\)-\(\dfrac{-4}{13}\))+\(\dfrac{11}{-10}\)
4) \(\dfrac{13}{17}\)\(\times\)\(\dfrac{4}{-5}\)+\(\dfrac{13}{17}\)\(\times\)\(\dfrac{-3}{4}\)
5) \(\dfrac{-5}{12}\)\(\times\)\(\dfrac{7}{-17}\)\(\times\)\(\dfrac{9}{-20}\)
6) \(\dfrac{5}{9}\)\(\times\)\(\dfrac{11}{23}\)+ \(\dfrac{11}{23}\)\(\times\)\(\dfrac{17}{9}\)\(-\)\(\dfrac{13}{9}\)\(\times\)\(\dfrac{11}{23}\)
2.Tính (+5) + ( +4) = ? 3.Tính (- 9) + ( - 1) = ? 4.Tính : 28 + (-15) = ? 5.Tính (-15) + 12 = ? 6.Tính (-25) + 25 = ? 7.Tính : 13 - 17 = ? 8.Tính : (-78) - 9 = ? 9.Tính : ( -24) - ( - 16) = ? 10.Tính : 17 - (-3) = 11.Tính nhanh : (-21) - ( 48 + 52 - 21) = ?
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25
-13/17+(13/-21+-4/17)
a,9/4-[-11}/-4
b, 7/8-3/-8-1/8
c,-5/21-25/21-[-1]/21
d, 18/24-35/-10
e, 3/7-11/14-19/28
g, 5/-{-2}/3-1/12
h, 3/17-{-5}/13-{-18}/35-14/17-17/{-35}-{-8}/13