Question

直接寫得數(shù)．

1 2 ÷3=	10÷ 5 7 =	7 12 ÷ 7 4 =	7 6 × 7 15 =
3 2 ÷ 3 4 =	1 6 × 3 4 =	4× 3 16 =	1- 4 5 =
2 3 ×60=	15 4 × 2 5 =	3 8 × 3 8 =	3 5 × 5 27 × 3 8 =
5 9 ÷5=	30÷ 5 6 =	8 15 ÷ 2 3 =	2 3 × 5 4 ÷ 10 9 =

Answer 1

分析：本題中包含了分?jǐn)?shù)乘法、除法、加法及乘除法的混合運(yùn)算等題目，分別按它們的計(jì)算法則細(xì)心計(jì)算直接寫出得數(shù)即可．

解答：

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解： 1 2 ÷3= 1 6 ；     10÷ 5 7 =14；     7 12 ÷ 7 4 = 1 3 ；     7 6 × 7 15 = 49 90 ； 3 2 ÷ 3 4 =2；     1 6 × 3 4 = 1 8 ；     4× 3 16 = 3 4 ；      1- 4 5 = 1 5 ； 2 3 ×60=40；   15 4 × 2 5 = 3 2 ；     3 8 × 3 8 = 9 64 ；     3 5 × 5 27 × 3 8 = 1 24 ； 5 9 ÷5= 1 9 ；     30÷ 5 6 =36；    8 15 ÷ 2 3 = 4 5 ；      2 3 × 5 4 ÷ 10 9 = 3 4 ． 點(diǎn)評(píng)：完成此類題目要細(xì)心一些，認(rèn)真分析每組數(shù)據(jù)，根據(jù)計(jì)算法則快速準(zhǔn)確的寫出得數(shù)．