Các câu hỏi tương tự
a. ( 19 5/8 : 7/12 - 13 1/4 : 7/12) . 4/5
b.( - 2/5 + 3/7) - (4/9 + 12/20 - 13/35) + 7/35
c. ( 4 5/57 - 3/ 4/51 + 8 13/29) - ( 3 5/57 - 6 16/29)
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
GIÚP TỚ VỚI T0T !!!1) ( 4frac{5}{57}- 3frac{4}{41}- 8frac{13}{29}) - ( 3frac{5}{57}- 6frac{16}{29} )2) frac{6}{7}+ frac{5}{8} : 5 - frac{3}{16} . ( -2 )^23) 1frac{13}{15}. 0,75 - (frac{104}{195}+ 25% ) . frac{24}{47}- 3frac{12}{13}: 34) [ 80% : frac{1}{2}- 2 . 0,75 + ( -3 )^2. frac{1}{6}] : frac{1}{10}1frac{1}{5}. ( frac{1}{3}- frac{1}{2}) AI NHANH TỚ TICK CHO !!!
Đọc tiếp
GIÚP TỚ VỚI T0T !!!
1) ( 4\(\frac{5}{57}\)- 3\(\frac{4}{41}\)- 8\(\frac{13}{29}\)) - ( 3\(\frac{5}{57}\)- 6\(\frac{16}{29}\) )
2) \(\frac{6}{7}\)+ \(\frac{5}{8}\) : 5 - \(\frac{3}{16}\) . ( -2 )\(^2\)
3) 1\(\frac{13}{15}\). 0,75 - (\(\frac{104}{195}\)+ 25% ) . \(\frac{24}{47}\)- 3\(\frac{12}{13}\): 3
4) [ 80% : \(\frac{1}{2}\)- 2 . 0,75 + ( -3 )\(^2\). \(\frac{1}{6}\)] : \(\frac{1}{10}\)1\(\frac{1}{5}\). ( \(\frac{1}{3}\)- \(\frac{1}{2}\))
AI NHANH TỚ TICK CHO !!!
-4(5-x)=-3(6-x)
-3(x-8)-(2x-7)=35
2. Tính tổng
1+(-2)+3+(-4)+...+49+(-50)
1-2+3-4+...+99-100
2-4+6-8+...+49-50
Tính hợp lý
24(16-5)-16(24-5)
29-(19-13)-19(29*13)
31*(-18)+31*(-81)-31
(-12)*47+(-12)*52+(-12)
13(23+22)-3(17+28)
1 + 2 + 3 + 4 + 5 + 6 + 7 +8
3+ 4 +5 + 6 + 7+8 +9 + 10 +11
1+ 3 + 5 + 7 + 9 + 11+ 13 + 15
2+ 4 + 6 + 8 + 10 + 12 + 14 + 16
1+ 4 + 7 + 10 + 13 + 16 + 19 + 22
6+ 8 + 10 + 12 + 14 + 16 + 18
7 + 10 + 13 + 16 + 19 + 22 + 25 / 1 + 5 + 9 + 13 + 17 + 21 + 25 + 29 + 33 + 37
Bài 1: Tính hợp lý
1/ 35.18-5.7.28
2/ 45-5.(12+9)
3/ 24.(16-5)-16.(24-5)
4/ 29.(19-13)-19.(29-13)
5/ 31.(-18)+31.(-81)-31
6/ (-12).47(-12).52+(-12)
7/ 13.(23+22)-3.(17+28)
8/ -48+48.(-78)+48.(21)
1) 15 - 98 + 91 - 75 + 98 - 91 - 13
2) 5 - ( 4 - 7 + 12 ) + ( 4 - 7 + 12 ) - 10
3) 20 - ( 25 - 98 + 12 ) + ( 25 - 98 - 72 )
4) - ( 17 - 4 + 13 + | -17 | + 13 )
5) | -16 | - ( 5 - 8 + 7) - ( - 5 ) - 8
6) -20 + ( 3 - 16 + 7 ) - ( 3 - 16 + 7 )
7) 32 - ( 5 - 8 + 32 ) + ( 5 - 8 + 6 )
8) -20 - ( 25 - 11 + 8 ) + ( 25 - 8 + 20 )
Tính hợp lí :
1. 35.18-5.7.28
2/ 45-5.(12+9)
3/ 24.(16-5)-16.(24-5)
4/ 29 . (19--13) -19 . (29-13)
5/ 31. (-18) + 31 . (-81) - 31
6 / ( -12) . 47 + ( -12 ) . 52 + (-12)
7/ 13 .( 23 + 22 ) - 3. ( 17 + 28)
8/ -48 + 48 . ( -78 ) + 48 . (-21)
Bài 2: Tính hợp lý
1/ (-105). 47 -105. 53; 2/ 45 – 5. (12 + 9)
3/ 24. (16 – 5) – 16. (24 - 5) 4/ 29. (19 – 13) – 19. (29 – 13)
5/ 31. (-18) + 31. ( - 81) – 31 6/ (-12).47 + (-12). 52 + (-12)
Đọc tiếp
Bài 2: Tính hợp lý
1/ (-105). 47 -105. 53; 2/ 45 – 5. (12 + 9)
3/ 24. (16 – 5) – 16. (24 - 5) 4/ 29. (19 – 13) – 19. (29 – 13)
5/ 31. (-18) + 31. ( - 81) – 31 6/ (-12).47 + (-12). 52 + (-12)