35+ 25+65+48+36+45 =
Bài 1 :
36 . 28 + 69 . 69 + 36 . 82 + 65 . 41 - 110
700 : 25 = ; 84 : 7 ; 108 : 9 ; 15 . 28 ; 125 . 48
Bài 2 : Tính nhanh
a) 35 . 34 + 65 . 75 + 35 . 86 + 65 . 45
b) 2 . 25 . 8 + 4 . 37 . 6 + 2 . 38 . 12
c) 108 + 16 . 216 - 2 . 108
d) 65 . 3 . 130 + 15 . 65
Tính
a) (-37-17) . (-9) + 35 . (-9-11)
b) ( -25) . (75-45) - 75 . ( 45-25)
c) 136 . ( -47) + 36 . 47
d) (-48) . 72 + 36 . (-304)
\(a,\left(-37-17\right).\left(-9\right)+35.\left(-9-11\right)\)
\(=\left(-54\right).\left(-9\right)+35.\left(-20\right)\)
\(=486+\left(-700\right)\)
\(=-214\)
\(b,\left(-25\right).\left(75-25\right)-75.\left(45-25\right)\)
\(=\left(-25\right).50-75.20\)
\(=\left(-25\right).50+\left(-25\right).3.20\)
\(=\left(-25\right).50+\left(-25\right).60\)
\(=\left(-25\right).\left(50+60\right)\)
\(=\left(-25\right).110\)
\(=-2750\)
\(c,136.\left(-47\right)+36.47\)
\(=47.\left(-136+36\right)\)
\(=47.\left(-100\right)\)
\(=-4700\)
Bỏ ngoặc rồi tính :
a, - ( - 15 + 125 - 81 ) - ( - 85 + 75 - 19 + 100 )
b, ( 39 - 48 + 57 ) - ( - 61 + 52 + 157 )
c, ( -25 - 65 + 30 ) - ( 75 - 65 - 170 )
d, - ( - 45 - 135 + 29 ) + ( 55 - 35 - 71 )
a, -(-15+125-81)-(-85+75-19+100)
=-15-125+81-(-85)-75+19-100
=-140+81-(-85)-75+19-100
=-59-(-85)-75+19-100
=-16-75+19-100
=-91+19-100
=-72-100
=-172
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70=?
(25--36)+(65-23)-25+23-58+26-36+45+58-2565
Không biết tính ak? Lười! Máy tính âu?
a) 65. 48 + 35 . 48 + 12 . 58 - 12 . 38
b) 20180 + { 152 : [ 175 - ( 23 . 52 - 6 . 25 ) ] }
a: \(65\cdot48+35\cdot48+12\cdot58-12\cdot38\)
\(=48\left(65+35\right)+12\left(58-38\right)\)
\(=48\cdot100+12\cdot20\)
\(=4800+240=5040\)
b: \(2018^2+\left\{15^2:\left[175-\left(2^3\cdot5^2-6\cdot25\right)\right]\right\}\)
\(=1+\left\{\dfrac{225}{175-\left(8\cdot25-150\right)}\right\}\)
\(=1+\dfrac{225}{175-\left(200-150\right)}\)
\(=1+\dfrac{225}{175-50}=1+\dfrac{225}{125}=1+\dfrac{5}{3}=\dfrac{8}{3}\)
Tính nhanh:
35 . 34+35 . 38+65 . 75+65 . 45
36 . 28+36 . 82+64 . 69+64 . 41
123 . 456+456 . 321 -256 . 444
Các bạn giúp mik ha!@
tim cach tinh nhanh nhat cho cac cau hoi :
25*25
35*35
45*45
55*55
65*65
75*75
85*85
95*95