100+100+300-100-100*100-100=
200 + 800 - 100 + 100 = ?
100 - 100 + 100 = ?
300 + 300 - 900 + 100 = ?
12 + 12 + 12 + 12 + 12 = ?
nhanh cho tick !
200 + 800 - 100 + 100 = 1000
100 - 100 + 100 = ?100
300 + 300 - 900 + 100 = -200
12 + 12 + 12 + 12 + 12 = 70
Tính nhẩm:
a) 27 × 10 = …...; 72 × 100 =…...; 14 × 1000 =…...
86 × 10 = …...; 103 × 10 =…...; 452 × 1000 =…...
358 × 10 = …...; 1977 × 100 =…...; 300 × 1000 =…...
b) 80 : 10 = …...; 400 : 100 =…... ;6000 : 1000 =…...
300 : 10 = …...; 4000 : 100 =…... ;60000 : 1000 =…...
2000 : 10 =…...; 40000 : 100 =…... ;600000 : 1000 =…...
c) 64 × 10 =…...; 32 × 100 =…...; 95 × 1000 =…...
640 : 10 =…...; 3200 : 100 =…...; 95000 : 1000 =…...
a) 27 × 10 = 270; 72 × 100 = 7200; 14 × 1000 = 14000
86 × 10 = 860; 103 × 10 = 10300; 452 × 1000 = 452000
358 × 10 = 3580; 1977 × 100 = 197700; 300 × 1000 = 300000
b) 80 :10 = 8; 400 : 100 = 4 ;6000 : 1000 = 6
300 : 10 = 30; 4000 : 100 = 40 ; 60000 : 1000 = 60
2000 :10 = 200; 40000 :100 = 400 ;600000 : 1000 = 600
c) 64 × 10 = 640; 32 × 100 = 3200; 95 × 1000 = 95000
640 : 10 = 64; 3200 : 100 = 32; 95000 : 1000 = 95
100+100+100-300+1000-500-500
\(\text{100+100+100-300+1000-500-500}=0\)
100+100+200+200+300+300=
100 + 100 + 200 + 200 + 300 + 300
= 200 + 200 + 200 + 300 + 300
= 400 + 200 + 300 + 300
= 600 + 600
= 1200
300+300+300x300+300x300+100+100=
25+8+x=70
8+x = 70 - 25
8+x = 45
x = 45 - 8
x = 37
100 + ( 100 - 100 ) =? : 200 + ( 1000000- 100000 )=? : 300 - ( 200- 100 ) =? ; 30 + ( 22 : 2 ) = ?
100 + ( 100 - 100 ) =100
200 + ( 1000000- 100000 )=900200
300 - ( 200- 100 ) =200
30 + ( 22 : 2 ) =41
100 + (100 - 100)
= 100 + 0
= 100
200 + (1000000 - 100000)
= 200 + 900000
= 900200
300 - (200 - 100)
= 300 - 100
= 200
30 + (22 : 2)
= 30 + 11
= 41
100 + (100 - 100 )
= 100 + 0
= 100
200 + (1000000 - 100000)
= 200 + 900000
= 900200
300 - (200 - 100)
= 300 - 100
= 200
30 + (22 : 2)
= 30 + 11
= 41
100+100+100+400+300
ai lam nhanh minh se k
100 + 100 + 100 + 400 + 300
= 300 + 400 + 300
= 700 + 300
= 1000
1005 : 1003 = ?
102 . 101 =?
500200 . 50010 =?
105 . 102 = ?
10030 . 10010 = ?
200100 : 20010 = ?
10020 . 10010 = ?
300100 . 300100 = ?
1005 : 1003 = 1002
102 . 101 = 103
500200 . 50010 = 500210
105 . 102 = 107
10030 . 10010 = 10040
200100 : 20010 = 20090
10020 . 10010 = 10030
300100 . 300100 = 300200
1005 : 1003
= 1005 - 3
= 1002
102 . 101
= 102 + 1
= 103
500200 . 50010
= 500200 + 10
= 500210
105 . 102
= 105 + 2
= 107
10030 . 10010
= 10030 + 10
= 10040
200100 : 20010
= 200100 - 10
= 200190
10020 . 10010
= 10020 + 10
= 10030
300100 .300100
= 300100 + 100
= 300200
100 + 300 + 100=?