2016五年級寒假作業答案（完整版）

　　第一天:

數學:

1.尋找失去的數.

14.59+10.72-25.31=0 49.81-48.32+78.51=80

2.求未知量.

解:a=s÷h 解：h=2s÷a

=5.52÷1.2 =2×5.25÷ 2.5

=4.6(m) =10.5÷2.5

=4.2(dm)

3.找出等量關係，並列方程解答.

(1)820減去一個數的16倍等於45.5與8的積,求這個數.

解:設這個數是x.

820-16x=45.5×8

820-16x=364

16x=820-364

16x=456

x=28.5

(2)一個數減去6後,擴大7倍等於這個數的2倍,求這個數.

解:設這個數是x.

7(x-6)=2x

7x-42=2x

7x-2x=42

5x=42

x=8.4

4.寫出下列各圖案的數字.

1.3 2.2 3.1 4.4

英語:1.B

2.A

3.C

4.D

5.B

　　第二天:

語文:

(1)連綿不段的山叫巒.

(2)山的突出的尖頂叫峯.

(3)頂上有路可通行的山叫嶺.

(4)水很深叫淵.

(5)水流急叫湍.

(6)兩山相夾之水叫澗.

民俗大觀：

過春節時，要在門上貼對聯.

要吃湯圓，一家人團團圓圓.

要把"福"字倒着貼在門上，圖吉利.

數學:

1.下列各題錯在哪裏?請改正.

1.73×3.7+1.73×6.3+1.73 0.125×6.4

=1.73×(3.7+6.3)+1.73 =(0.125×8)×0.8

=1.73×10+1.73 =1×0.8

=17.3+1.73 =0.8

=19.03

2.化簡.

4×3×2×b=24b 8m×3=24m 44b÷4=11b

4×25x=100x 6×4x+x-5=25x-5 7×3x+4×5y-15=21x+20y-15

3.求值:當k=19,m=4,n=5時，求k(3m+6n)的值.

解：當k=19,m=4,n=5時

k(3m+6n)=19×(3×4+6×5)

=19×(12+30)

=19×42

=798

4.不計算，在下面的□填入“>、<”或“=”。

4.7×2.01>4.7 0.28÷0.5>0.28

4.7×1=4.7 0.28÷3.5<0.28

4.7×0.01<4.7 0.28÷0.01>0.28

動腦筋：

解:設小長方形的寬為x,則長方形為2x.

2(3x+2x)=8 S長=(3×0.8)×(2×0.8)

5x×2=8 =2.4×1.6

10x=8 =3.84(dm2)

x=0.8

英語：

1.仿寫句子：

This is my is a is likes to lives in can run fast.

2.列舉短文中包含動作的單詞：

feed,clean,live,climb,swing,eat.

3.列舉Mr Brown與動物所做的事.

He feeds the animals every cleans their cages every morning.

4.找出文中動物活動的場所.

cage,rope,zoo.

5.根據短文回答問題.

1)What does Mr Brown do every day?He feeds the animals and cleans their cages every day.

2)Does the monkey have long arms?Yes ,it does.

3)What can the monkey do?It can climb to the top of the cage and swing on a rope.

4)Where does it live?It lives in a zoo.

5)What does it like to eat?It likes to eat fruit and leaves.

6.根據短文判斷，用T或F表示.

( T )1)My uncle works in a zoo.

( T )2)My uncle likes the baby monkey.

( T )3)The monkey doesn't like to eat sweets.

　　第三天:

數學:

1.計算並湊整倒百分位(用四捨五入法).

8.02×0.04≈0.32 7.83×1.39≈10.88

8.02 7.83

×0.04 ×1.39

-------- --------

0.3208 7047

2349

783

--------

10.8837

11.8÷0.21≈56.19 88.2÷4.6≈49.13

56.194 49.134

------- --------

21∫1180 46∫1882

105 184

------- --------

130 420

126 414

-------- --------

40 60

21 46

-------- --------

190 140

189 120

-------- --------

100 200

184

2.遞等式計算(能簡則簡).

6.4×0.29+6.4×8.7+6.4 2.98×1.25×(4-0.8)×0.25

=6.4×(0.29+8.7+1) =2.98×1.25×3.2×0.25

=6.4×10 =2.98×1.25×0.4×8×0.25

=64 =(1.25×8)×(0.25×0.4)×2.98

=10×0.1×2.98

=2.98

9.9×101-9.9 [0.68÷(3.2-3.03)+1.4÷(6-0.6)