可唔可以幫我2條數學題?寫答案

1.5x3.14x4/3x2+5x3.1 4x2/1
=4.74*(4/3)*2+15.7*2
=6.28*2+31.4
=12.56+31.4
=43.96
2.(12－5.4)÷6÷7/22x100
=6.6÷6÷7/22x100
=1.1÷7/22x100
=345 4/7

1. 15 x 3.14 x 8/3 + 10 x 3.14
= 40 x 3.14 + 10 x 3.14
= 50 x 3.14
= 157

2. (6.6) )÷6÷7/22 x 100
= 1.1 ÷ 7 / 22 x 100
= 110 ÷ 7 / 22
= 1.1 x 22/7 x 100
= 110 x 22 / 7
= 2420 / 7
= 345.71

1.5x3.14x4/3x2+5x3.1 4x2/1
=4.74*(4/3)*2+15.7*2
=6.28*2+31.4
=12.56+31.4
=43.96

2.(12－5.4)÷6÷7/22x100
=6.6÷6÷7/22x100
=1.1÷7/22x100
=345 4/7

努力~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1.43.96
2.345.57(一個小數位)
數學學過，今天學！

1.43.96
2.345.71(一個小數位)

2007-05-03 21:31:05 補充：
打錯，係兩個小數位