100+1000+10000+100000+1000000=??????
tinh nhanh
D = 1/10+1/100+1000+.............+1/1000000
C=1/10-1/100-1/1000-1/10000-1/100000-1/1000000
câu 1: đổi đơn vị đo:
1 m2=......mm2
a.10 b.100 c.1000 d.1000000
1000+1000 =
12121212-12345=
123456789+987654321=
123456789×1000=?
Tính nhanh
1000000:10000 =
23614000:1000 =
1095200:10=
100 + ( 100 - 100 ) =? : 200 + ( 1000000- 100000 )=? : 300 - ( 200- 100 ) =? ; 30 + ( 22 : 2 ) = ?
1+1+17+18+100+123+123456789+1486357918+16485886+8865386=