Question

直接寫(xiě)得數(shù)．

0.04+0.6=	1-99%=	14÷35=	1200-198=
6 7 × 7 6 =	2÷0.01=	1 5 + 1 6 + 4 5 =	（ 2 5 - 1 3 ）×15=

Answer 1

分析：①注意小數(shù)點(diǎn)對(duì)齊；②把百分?jǐn)?shù)化為小數(shù)，再計(jì)算；③被除數(shù)比除數(shù)小，先商0，在被除數(shù)后面添0補(bǔ)足，然后再除；④把198看作200-2，再簡(jiǎn)算；⑤約分計(jì)算；⑥把被除數(shù)和除數(shù)分別擴(kuò)大100倍，再計(jì)算；⑦運(yùn)用加法交換律簡(jiǎn)算；⑧運(yùn)用乘法分配律簡(jiǎn)算．

解答：解：①0.04+0.6=0.64；                         ②1-99%=0.01；                          ③14÷35=0.4；                        ④1200-198=1002；
⑤

6

7

×

7

6

=1；                                  ⑥2÷0.01=200；                         ⑦

1

5

+

1

6

+

4

5

=1

1

6

；                       ⑧（

2

5

-

1

3

）×15=1．

點(diǎn)評(píng)：此題雖屬于直接寫(xiě)得數(shù)的問(wèn)題，但考查了學(xué)生多方面的數(shù)學(xué)知識(shí)，根據(jù)題目特點(diǎn)，靈活解答．