tính nhanh
25. (187 + 18 + 1328)
Tính nhanh :
25.(187+18+1382)
Trả lời
25.(187+1400)
=25.87+25.1400
=2175+35000
=37175.
25.(187+18+1382)
=25.(187+1400)
=25.187+1400
=25.1400+187
=35000+187
=35187
4 Tính nhanh
25 × 187 + 187 × 73 + 817 + 817
25x187+187x73+817x1+817x1
= 187x(25+73+1+1)
= 187x100
=18700
25 × 187 + 187 × 73 + 817 + 817
= 25 × 187 + 187 × 73 +187+187+1260
= 187 x ( 25+73+1+1) + 1260
= 187 x 100 + 1260
= 18700 + 1260
= 19960
chúc bn học tốt
Sủa lại đề nhé
\(25\cdot187+187\cdot73+187+187\)
\(=187\cdot\left(25+73\right)+187+187\)
\(=187\cdot98+187+187\)
\(=187\cdot\left(98+1+1\right)\)
\(=187\cdot100\)
\(=18700\)
25. <187+18+1382>
Đề có vẻ chưa đầy đủ em ạ
Tính nhanh
a, 75x8x15x3
b, 55x17x16x15
c, 25x (187+18+1382)
25.(187+18+1382)
= 25.(187+1400)
=25.1400+187
=3500 +187
= 35187
tính
1) 18 + 14 + 16 + 35 + 110 + 160 + 150 + 145 + 158 + 140 + 55 + 25
2) 62 + 78 + 48 + 96 + 85 + 91
3) 107 + 439 + 666 + 673 + 358 + 187
4) 187 + 62 + 78 + 48 + 96 + 85 + 91 + 107 + 439 + 666 + 673 + 358
1) 18+14+16+35+110+160+150+145+158+140+55+25
= (14+16)+(35+25)+(145+55)+(140+160)+(158+18)+(110+150)
= 30+ 60 +200+ 300+ 176+ 260
= 590+ 436= 1026.
2) 62+ 78 +48+ 96+85+ 91
= (62 +48)+ (96 +85 +91+ 78)
= 110 + 350= 460.
3) 107 +439 + 666 +673+ 358 + 187
= (107 + 673) + ( 439 + 666) + ( 358+ 187)
= 780 + (1105 + 545)
= 780+ 1650= 2430.
4) 187 + 62+ 78+48+ 96+ 85+ 91+107+ 439+ 666+ 673+ 358
= (187 + 673) + ( 62+ 78)+ (439+ 91)+ ( 85+ 358+ 107)+ (666+ 96+ 48)
= (860+ 140)+ (530+ 550+ 810)
= 1000+ 1890= 2890.
Tính:
a) 3 + 2 6 = . . . . . . . . . . . . . . .
b) 13 28 − 3 21 = . . . . . . . . . . . . . . .
tính nhanh
18*25+18*75