4: 885 240 106 130…… 3
114 612 115 116…… 4
5: 576÷3÷4
=192÷4
= 48
81×7÷9
=567÷9
=63
201+232--365
=433--365
=68
399÷7+294
=57+294
=351
672÷﹙2×3﹚
=672÷6
=112
﹙601--246﹚÷5
=355÷5
=71
6: 8×30×3=720
724÷4=180
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