第六单元《百分数》计算能力综合训练题(5大类)
班级:________ 姓名:________ 评价:________
1. 口算
① 20%÷0.2 = ② 50×30% = ③ 6.3 + 3.7% =
④ 45÷90% = ⑤ 20×15% = ⑥ 3 - 60% =
⑦ 12%÷0.12 = ⑧ 80×25% = ⑨ 4.2 + 5.8% =
⑩ 72÷80% = 40×10% = 5 - 25% =
30%÷0.3 = 60×40% = 2.1 + 7.9% =
54÷60% = 30×20% = 4 - 40% =
2. 分数、小数化成百分数
① = ( )% ② = ( )% ③ = ( )%
④ = ( )% ⑤ = ( )% ⑥ = ( )%
⑦ 0.125 = ( )% ⑧ 0.375 = ( )% ⑨ 0.625 = ( )%
⑩ 0.875 = ( )% 0.08 = ( )% 0.04 = ( )%
= ( )% = ( )% = ( )%
2.4 = ( )% 1.8 = ( )% 0.005 = ( )%
3. 百分数化成分数或小数
① 12.5% = ② 37.5% = ③ 62.5% =
④ 87.5% = ⑤ 24% = ⑥ 36% =
⑦ 4.5% = ( ) ⑧ 8.2% = ( ) ⑨ 12.8% = ( )
⑩ 250% = ( ) 150% = ( ) 75% = ( )
0.5% = 1.5% = 2.5% =
120% = ( ) 180% = ( ) 300% = ( )
4. 解方程
① ② ③15 - 30%x = 9
④ ⑤ ⑥20 - 40%x = 12
⑦ ⑧ ⑨18 - 25%x = 10
⑩ 24 - 50%x = 14
30 - 60%x = 12
36 - 75%x = 9
5. 计算下列各题,能简算的要简算
① ② ③ 4.8×75% - 0.75×1.8
④ ⑤ ⑥ 6.5×60% - 0.6×3.5
⑦ ⑧ ⑨ 7.2×80% - 0.8×4.2
⑩ 8.1×90% - 0.9×5.1
9.3×50% - 0.5×6.3
10.4×40% - 0.4×7.4
答案
1. 口算
① 1 ② 15 ③ 6.337
④ 50 ⑤ 3 ⑥ 2.4
⑦ 1 ⑧ 20 ⑨ 4.258
⑩ 90 4 4.75
1 24 2.179
90 6 3.6
2. 分数、小数化成百分数
① 15 ② 44 ③ 85
④ 70 ⑤ 38 ⑥ 92
⑦ 12.5 ⑧ 37.5 ⑨ 62.5
⑩ 87.5 8 4
9 26 52.5
240 180 0.5
3. 百分数化成分数或小数
① ② ③
④ ⑤ ⑥
⑦ 0.045 ⑧ 0.082 ⑨ 0.128
⑩ 2.5 1.5 0.75
1.2 1.8 3
4. 解方程
① ② ③
④ ⑤ ⑥
⑦ ⑧ ⑨
⑩
5. 计算下列各题,能简算的要简算
① 39 ② 0.2 ③ 2.25
④ 40 ⑤ 0.25 ⑥ 1.8
⑦ 55 ⑧ 0.2 ⑨ 2.4
⑩ 38 2.7
1.5
1.2