100 + 100 + 2000 + 500 = ?
500 + 500 = ?
100 + 100 = ?
200 + 200 = ?
2000 x 20 = ?
500 + 500 = 1 000
100 + 100 = 200
200 + 200 = 400
2 000 x 20 = 40 000
500 + 500 = 1000
100 + 100 = 200
200 + 200 = 400
2000 x 20 = 40000
500+500=1000
100+100=200
200+200=400
2000x20=4000
k mình nha
X+100+100+200+500=3000-2000
2000-x-100+200=500
2000-x-100=300
2000-x=400
x=2000-400
x=1600
ta có: 2000-x-100+200=500
=>2000-x-100 =300
=>2000-x = 400
=>x =1600
vậy: x=1600
ai tk mk rồi mk tk lại hứa luôn.
=>2000-x-100=500-200
=>2000-x-100=300
=>x-100=300+100
=>2000-x=400
=>x=2000-400
x=1600
Vậy x=1600
3000 : 10 x 500 = ?
2000 : 100 x 600= ?
3000 : 10 x 500 = 300 x 500 = 150000
2000 : 100 x 600 = 20 x 600 = 12000
1+10+100+500+2000+300-50+60-70+80=?
1 + 10 + 100 + 500 + 2000 + 300 - 50 + 60 - 70 + 80 = 2931 nha bạn
Tính nhẩm:
a) 3000 + 5000 = ..........
5000 + 5000 = ..........
4000 + 4000 = ..........
7000 + 2000 = ..........
6000 + 1000 = ..........
2000 + 8000 = ..........
b) 2000 + 700 = ..........
100 + 1000 = ..........
6000 + 600 = ..........
8000 + 500 = ..........
5000 + 300 = ..........
400 + 6000 = ..........
a) 3000 + 5000 = 8000
5000 + 5000 = 10 000
4000 + 4000 = 8000
7000 + 2000 = 9000
6000 + 1000 = 7000
2000 + 8000 = 10 000
b) 2000 + 700 = 2700
100 + 1000 = 1100
6000 + 600 = 6600
8000 + 500 = 8500
5000 + 300 = 5300
400 + 6000 = 6400
a) 3000+5000=8000
5000+5000=10000
4000+4000=8000
7000+2000=9000
6000+1000=7000
2000+8000=10000
b) 2000+700=2700
100+1000=1100
6000+600=6600
8000+500=8500
5000+300=5300
400+6000=6400
a) 3000 + 5000 = 8000
5000 + 5000 = 10000
4000 + 4000 =8000
7000 + 2000 = 9000
6000 + 1000 = 7000
2000 + 8000 = 10000
b) 2000 + 700 = 9000
100 + 1000 = 1100
6000 + 600 =12000
8000 + 500 = 13000
5000 + 300 = 5300
400 + 6000 = 6400
Bài 1:Tính nhẩm:
BCNN ( 40 ; 60 ) ; BCNN ( 300 ; 700 ; 500 )
BCNN ( 2000 ; 400 ; 3000 ) ; BCNN ( 25 ; 125 ; 100 )
100+100+100-300+1000-500-500
\(\text{100+100+100-300+1000-500-500}=0\)
Ai giải xong tr mình tick cho nhưng tick cho mình tr gửi thư cho mình tick lại cho
2000 + 100 + 500 + 400 = ?
2000+100+500+400
=2000+(100+500+400)
=2000+1000=3000