内容正文:
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第六单元 多边形的面积
1. 平行四边形的面积(一)
根据已知条件求出平行四边形的面积。(单位:厘米)
1 a = 4 h = 8 S = 2 a = 8 h = 1.5 S =
3 a = 8 h = 3 S = 4 a = 3.2 h = 4.8 S =
5 a = 10 h = 5 S = 6 a = 0.7 h = 3.5 S =
7 a = 2.5 h = 6 S = 8 a = 13 h = 7 S =
9 a = 1.6 h = 1.6 S = 10 a = 2.5 h = 4 S =
11 a = 20 h = 0.8 S = 12 a = 2.3 h = 0.5 S =
13 a = 9 h = 0.3 S = 14 a = 12.5 h = 0.8 S =
15 a = 6.5 h = 2.4 S = 16 a = 4.6 h = 0.4 S =
五年级数学上册口 算 天 天 练
50
1. 平行四边形的面积(二)
根据已知条件求出平行四边形的面积。(单位:分米)
1 a = 5 h = 5 S = 2 a = 3 h = 0.9 S =
3 a = 7 h = 2.1 S = 4 a = 2.5 h = 0.4 S =
5 a = 12 h = 8 S = 6 a = 80 h = 0.75 S =
7 a = 1.4 h = 0.6 S = 8 a = 10 h = 0.2 S =
9 a = 90 h = 2.9 S = 10 a = 0.3 h = 4.6 S =
11 a = 2.5 h = 2.5 S = 12 a = 25 h = 0.4 S =
13 a = 0.8 h = 0.3 S = 14 a = 5.6 h = 0.6 S =
15 a = 3.6 h = 2.6 S = 16 a = 0.2 h = 0.3 S =
17 a = 1.5 h = 2.5 S = 18 a = 0.1 h = 0.1 S =
参 考 答 案
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⑩ 10y 11 9.3x 12 4.5+3b
13 3a 14 0.55a 15 10.5x
16 c 17 1.72b 18 12t
19 0.5s 20 43.62y 21 0.5m
22 7x 23 14.5x 24 2.6a
25 2.5b 26 7.3a 27 8.3c
2. 解简易方程
方程的意义(一)
画“√”有: ① ② ③ ⑨ ⑩ 11 12 15
16
方程的意义(二)
画“√”有: ① ③ ⑤ ⑦ ⑨ ⑩ 12 13
14 15 16 18
等式的性质(一)
一、① 2.8 ② c ③ d ④ 20
二、① - 8 ② ÷ 3 ③ - 27
④ + 64 + 64 ⑤ × 8 ⑥ - 38
等式的性质(二)
① + 3 ② ÷ 3 ③ - 4
④ × 9.8 ⑤ ÷ 5 ⑥ ÷3.2
⑦ - 32 ⑧ × 3 ⑨ + 9.87
解方程(一)
① 25 ② 12 ③ 50
④ 154.3 ⑤ 56 ⑥ 280
⑦ 1.5 ⑧ 121.2 ⑨ 18
⑩ 95 11 36 12 24
13 3 14 37.1 15 90
16 100 17 5.6 18 88.5
解方程(二)
① 16 ② 102.5 ③ 16
④ 5.07 ⑤ 56 ⑥ 3
⑦ 10 ⑧ 125.7 ⑨ 4.4
⑩ 1 11 54 12 12.2
13 10 14 140 15 72
16 56 17 4.5 18 221
实际问题与方程(一)
① 44 ② 7.85 ③ 7.2
④ 4 ⑤ 1.2 ⑥ 0.03
⑦ 0.2 ⑧ 10.5 ⑨ 5.8
⑩ 3.2 11 0.2 12 6.2
13 4.8 14 4.32 15 3.04
16 6.79 17 1.38 18 16.1
实际问题与方程(二)
① 3.5 ② 18 ③ 8
④ 3 ⑤ 5 ⑥ 1