《2025年一本五年级数学苏教版暑假计算加应用题》

1.直接写出得数。(每题1★)
$2^{2}= $4 $5^{2}= $25 $20^{2}= $400 $80^{2}= $6400 $70^{2}= $4900
$0.3^{2}= $0.09 $0.7^{2}= $0.49 $0.02^{2}= $0.0004 $1.5^{2}= $2.25 $1.1^{2}= $1.21
$(\frac {6}{5})^{2}= $$\frac{36}{25}$ $(\frac {3}{8})^{2}= $$\frac{9}{64}$ $(\frac {5}{2})^{2}= $$\frac{25}{4}$ $(\frac {7}{6})^{2}= $$\frac{49}{36}$ $(\frac {2}{3})^{2}= $$\frac{4}{9}$
$3.14×(2^{2}-1^{2})= $9.42 $3.14×(4÷2)^{2}= $12.56 $3.14×(3^{2}-2^{2})= $15.7
$3.14×(0.2÷2)^{2}= $0.0314 $3.14×(4^{2}-3^{2})= $21.98 $3.14×(0.4÷2)^{2}= $0.1256
$3.14×(5^{2}-4^{2})= $28.26 $3.14×(20÷2)^{2}= $314 $3.14×(3^{2}-1^{2})= $25.12

答案： 4 25 400 6400 4900
0.09 0.49 0.0004 2.25 1.21
$\frac{36}{25}$ $\frac{9}{64}$ $\frac{25}{4}$ $\frac{49}{36}$ $\frac{4}{9}$
9.42 12.56 15.7
0.0314 21.98 0.1256
28.26 314 25.12

2.求下面各图形的面积。(每题4★)
(1)

$3.14×(40÷2)^2+100×40=5256(m²)$
(2)

3.14×6²÷2+3.14×(6÷2)²÷2=70.65(cm²)
(3)

3.14×4²+4×4=66.24(dm²)
(4)

4×4+3.14×(4÷2)²=28.56(dm²)

答案：
(1)$3.14×(40÷2)^2+100×40=5256(\text{m}^2)$
(2)$3.14×6^2÷2+3.14×(6÷2)^2÷2=70.65(\text{cm}^2)$
(3)$3.14×4^2+4×4=66.24(\text{dm}^2)$
(4)$4×4+3.14×(4÷2)^2=28.56(\text{dm}^2)$

3.求下面各图形中涂色部分的面积。(每题4★)

答案：
(1)$3.14×(2^2-1^2)=9.42(\text{cm}^2)$
(2)$3.14×4^2-4×4×\frac{1}{2}×4=18.24(\text{cm}^2)$