考點(diǎn):分?jǐn)?shù)的加法和減法,分?jǐn)?shù)乘法,分?jǐn)?shù)除法,分?jǐn)?shù)的四則混合運(yùn)算,小數(shù)乘法,小數(shù)除法
專(zhuān)題:計(jì)算題
分析:橫向數(shù):
(1)運(yùn)用分?jǐn)?shù)加法計(jì)算方法解答,
(2)運(yùn)用分?jǐn)?shù)減法計(jì)算方法解答,
(3)(8)運(yùn)用分?jǐn)?shù)乘法計(jì)算方法解答,
(4)運(yùn)用分?jǐn)?shù)除法計(jì)算方法解答,
(5)運(yùn)用小數(shù)減法計(jì)算方法解答,
(6)運(yùn)用小數(shù)乘法計(jì)算方法解答,
(7)運(yùn)用小數(shù)除法計(jì)算方法解答,
(9)(10)按照先算第二級(jí)運(yùn)算,再算第一級(jí)運(yùn)算順序計(jì)算解答,
(11)(12)按照從左到右順序計(jì)算解答.
解答:
解:+=1 | -= | ×= | ÷=1 |
73.05-3.96=69.09 | 27.8×1.4=38.92 | 3.12÷15=0.208 | ×39=12 |
×+1=1 | 1-×= | -+= | 18÷÷=45 |
點(diǎn)評(píng):依據(jù)四則運(yùn)算計(jì)算方法正確進(jìn)行計(jì)算是本題考查知識(shí)點(diǎn).