2525+5252+2524
=
=
1824; 2424;.....; 3624;4224
A. 2524 b.2524 c.3024 d.2824
1242+3525+2524
=
=
131392+2524+3524
=
=
1323+2524+1242
242424+252+2524
=
=
242424 + 252 + 2524
= 242676 + 2524
= 245200
Đặt tính rồi tính
1204 : 4 2524 : 5 2409 : 6 4224 : 7
.............. ................. ................. ................
.............. ................. ................. ................
.............. ................. ................. ................
(985+48721)x329+9(51256+5252)=
x + x + x + . . . + x + 100= 5252
Tính nhanh:
5252*535353/5353*525252=?
\(\frac{5252\times535353}{5353\times525252}\)
\(=\frac{101\times52\times10101\times53}{101\times53\times10101\times52}\)
\(=1\)
CHÚC BN HỌC TỐT!