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a) 9000 - 7000 = 2000
3000 - 2000 = 1000
8000 -8000 = 0
5000 - 1000 = 4000
6000 - 5000 = 1000
10000 - 2000 = 8000
b) 4600 - 400 = 4200
8500 - 500 = 8000
9900 - 300 = 9600
6800 - 700 = 6100
7200 - 3000 = 4200
5600 - 2000 = 3600
3800 - 3000 = 800
7400 - 400 = 7000
a)9000-7000=2000
3000-2000=1000
8000-8000=0
5000-1000=4000
6000-5000=1000
10000-2000=8000
b)4600-400=4200
8500-500=8000
9900-300=9600
6800-700=6100
7200-3000=4200
5600-2000=3600
3800-3000=800
7400-400=7000
a)
.?. – 11800 = 6900
11800 + 6900 = 18700
Chọn B.
b)
.?. – 43050 = 17350
17 350 + 43 050 = 60 400
Chọn C.
c)
.?. + 7000 = 10 000
10000 – 7000 = 3000
Chọn A.
d)
2 000 + .?. = 82 000
82 000 – 2000 = 80 000
Chọn B.
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ko đăng linh tinh những câu hỏi ko liên quan đến :
toán ,
tiếng việt ,
tiếng anh
hoặc có thể là đố vui cũng có thể chấp nhận
lần sau rút kinh nghiệm ko đăng linh tinh bạn nhé !
a)
.?. x 8 = 1600
1600 : 8 = 200
Chọn C.
b)
.?. : 6 = 600
600 x 6 = 3600
Chọn A.
c)
3 x .?. = 9000
9000 : 3 = 3000
Chọn A.
a) 3 000 + 800 + 20 + 5 = 3 825
b) 9 100 + 380 + 15 = 9495
Vì 9 495 < 9 500 nên 9100 + 380 + 15 < 9500
c) 6 000 + 4 = 6 004
Vì 6 004 > 4 600 nên 6000 + 4 > 4600.
d) 2000 + 70 + 8 = 2 078
Vì 2 078 < 2 780 nên 2 000 + 70 + 8 < 2 780.
=> 3(a+b+c+d)=210+170+180+130=690
a+b+c+d=690:3=230
=> a=230-170=60
b=230-180=50
c=230-130=100
d=230-210=20
đáp số : a=60;b=50;c=100;d=20
các bn cho mk vài li-ke cho tròn 670 với
a+b+c+b+c+d+c+d+a+d+a+b
=> 3a+3b+3c+3d=154+137+187+167=645
=> 3(a+b+c+d)=645
=> a+b+c+d=215
=> d=215-(a+b+c)=215-154=61
=> a=215-(a+c+d)= 215-137=78
=> b=215-(c+d+a)=215-187=28
=> c=215-(d+a+b)=215-167=48
Vậy a=78;b=28;c=48;d=61
a)
700 + .?. = 1600
1600 – 700 = 900
Chọn B.
b)
.?. + 7350 = 9500
9500 – 7350 = 2150
Chọn A.
c)
8000 - .?. = 600
8000 – 600 = 7400
Chọn C.
d)
.?. – 4730 = 5170
5170 + 4730 = 9900
Chọn C.