Question

222×27+666×16-999×5-555的简便方法？

Answer 1

可以把222变成111乘2，666，999，555变成111乘6，111乘9，111乘5。最后再把111提出来，得到的结果是111乘（27乘2+16乘6-9乘5-5）化简为111乘100等于11100

Answer 2

222×27+666×16-999×5-555
=111×2×27+111×6×16-111×9×5-111×5
=111×54+111×96-111×45-111×5
=111×（54+96-45-5）
=111×100
=11100

Answer 3

222×27+666×16-999×5-555=111×两×27+111×六×16-111×镍×5-111×5=111×（2×27+6×16.9×5-5）=111×（54+96-45-5）=111×[（54+96）-（45+5）]=111×150-50）=111×100=11100

Answer 4

5*5 +50*4 +500*3 +5000*2 +50000
=25 +200 +1500 +10000 +50000
=61725
或者：
5+55+555+5555+55555
=5 + 5*11 +5*111 +5*1111 +5*11111
=5*（1+11+111+1111+11111）
=5*12345
=61725

Answer 5

two hundred and twenty-two × 27 + 666 × 16 - 999 × 5 - 555 = 111 × two × 27 + 111 × six × 16 - 111 × nine × 5 - 111 × 5 = 111 × (2) × 27 + 6 × 16 - 9 × 5 - 5) = 111 × (54 + 96 - 45 - 5) = 111 × [(54 + 96) – (45 + 5)] = 111 × (150 - 50) = 111 × 100 = 11100