100+100+300-100-100*100-100=
300+300+300x300+300x300+100+100=
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 =…...
100+100+100+400+300
ai lam nhanh minh se k
3000 : 100 x 100 + 300 =
300 + 300 + 300 + 100 = ?
90 + 10 + 900 = ?
x+100=200-200+100-100+300
ai k mk ru mk k lai
100 + ( 100 - 100 ) =? : 200 + ( 1000000- 100000 )=? : 300 - ( 200- 100 ) =? ; 30 + ( 22 : 2 ) = ?
100 + 300 + 500 + 600 : 300 =?