1=6000
2=5600
3=2640
Chúc bạn học tốt!
1=6000
2=5600
3=2640
Chúc bạn học tốt!
1 tính nhanh
a, 14x35x5+10x25x7+20x70
b,53x(51+4)+53x(49+96)x53
c, (1+3+57+...+2001)x(135135x37-135x137137)
tinh nhanh
a,13x58x4+32x26x2+52x10
b,15x37x4+120x21+21x5x12
1,Tính nhanh
24.(15+49)+12.(50+42)
TÍNH NHANH
24.(15+49)+12.(50+42)
bài 1: tính nhanh
14.35.5+10.25.7+20.70
15.(27+18+6) + 15.(23+12)
24.15+49) + 12.(50+42 )
10.(81+19) + 100 + 50 .(91+9)
53.(51 +4) +53 .( 49+96) 53
tính nhanh
a)15(27+18+6)+ 15(23.12)
b) 24(15+49)+12(50+42)
tính nhanh
3) 14.35.5+10.25.7+20.7
4) 15(27+18+6)+ 15(23.12)
5) 24(15+49)+12(50+42)
6) 10(81+19)+100+50(91+9)
tính nhanh
3) 14.35.5+10.25.7+20.7
4) 15(27+18+6)+ 15(23.12)
5) 24(15+49)+12(50+42)
6) 10(81+19)+100+50(91+9)
Tính nhanh
13.58.4 + 32.26.2+52.10
15.34.4+120.21+21.5.12
14.35.5+10.25.7+20.70
24.( 15+49)+12.(50+42)
53.(51+4)+53.(49+96)+53
42.(15+96)+6.(25+4).7
45.(13+78)+8.(53+25).2