Question

直接寫得數(shù)． 3 4 ×16=	12÷ 3 5 =	0.3× 6 5 =
3 5 ÷÷ 9 10 =	1÷ 7 8 =	0× 7 12 + 1 8 =
5 7 × 2 3 ÷ 5 7 =	1 2 × 1 3 ÷ 1 2 × 1 3 =

Answer 1

分析：根據(jù)分?jǐn)?shù)乘法和分?jǐn)?shù)除法的計(jì)算方法及四則運(yùn)算的計(jì)算順序進(jìn)行計(jì)算．

5

7

×

2

3

÷

5

7

和

1

2

×

1

3

÷

1

2

×

1

3

可先把除法轉(zhuǎn)化為乘法，再根據(jù)乘法結(jié)合律和交換律進(jìn)行簡算．

解答：

解： 3 4 ×16=12	12÷ 3 5 =20	0.3× 6 5 = 9 25
3 5 ÷ 9 10 = 2 3	1÷ 7 8 = 8 7	0× 7 12 + 1 8 = 1 8
5 7 × 2 3 ÷ 5 7 = 2 3	1 2 × 1 3 ÷ 1 2 × 1 3 = 1 9

點(diǎn)評：本題綜合考查了學(xué)生的計(jì)算能力，要認(rèn)真細(xì)心．