考點(diǎn):分?jǐn)?shù)的四則混合運(yùn)算,求比值和化簡(jiǎn)比
專題:運(yùn)算順序及法則
分析:橫向數(shù):
(1)依據(jù)小數(shù)乘法計(jì)算方法解答,
(2)依據(jù)整數(shù)除法計(jì)算方法解答,
(3)依據(jù)求一個(gè)數(shù)的立方計(jì)算方法解答,
(4)(6)按照從左到右順序計(jì)算解答,
(5)依據(jù)分?jǐn)?shù)減法計(jì)算方法解答,
(7)依據(jù)分?jǐn)?shù)乘法計(jì)算方法解答,
(8)運(yùn)用乘法分配律解答,
(9)用比的前項(xiàng)除以后項(xiàng)解答,
(10)依據(jù)比的基本性質(zhì)解答.
解答:
解:0.25×=0.0625 |
840÷40=21 |
0.43=0.064 |
2-+=1 |
-= |
9×-=2 |
10×=16 |
15×(-)=4 |
求比值::=2 |
化簡(jiǎn)比:1.2:=8:5 |
點(diǎn)評(píng):本題考查的知識(shí)點(diǎn)比較多,但都是基礎(chǔ)知識(shí),只要掌握的牢固就很簡(jiǎn)單.