脱式计算怎么做,求帮忙
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67+720÷(180-150)
=67+720÷30
=67+24
=91
(81+24)X(36-17)
=105X19
=(100+5)X19
=100X19+5X19
=1900+95
=1995
(282-137)÷5X6
=145÷5X6
=29X6
=174
280-18X4+270
=280-72+270
=208+270
=478
54-27 45X13
3 X 27 600- 585
81 ÷ 9 15 ÷ 5
9 3
综合算式:3X(54-27)÷9 综合算式:600-(45X13)÷5
五、38+38X3-26
=38+114-26
=152-26
=126千克
即:水果店有苹果126千克
=67+720÷30
=67+24
=91
(81+24)X(36-17)
=105X19
=(100+5)X19
=100X19+5X19
=1900+95
=1995
(282-137)÷5X6
=145÷5X6
=29X6
=174
280-18X4+270
=280-72+270
=208+270
=478
54-27 45X13
3 X 27 600- 585
81 ÷ 9 15 ÷ 5
9 3
综合算式:3X(54-27)÷9 综合算式:600-(45X13)÷5
五、38+38X3-26
=38+114-26
=152-26
=126千克
即:水果店有苹果126千克
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