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百分数、小数、分数混合运算与解方程 | |||||||
姓名： | 家长签名： | ||||||
一、计算题。 | |||||||
5 － 50% = | 60% | × 5 = | 5 ÷ 1 = | 5 ÷ 5 = | |||
8 | 6 | 6 | 3 | 6 | |||
5 ÷ 90% = | 5 － 0.25 = | 1 ÷ 1 = | 1 | － 2 = | |||
9 | 8 | 9 | 3 | 7 | |||
25%÷ 1 = | 33.5 | － 1 = | 4 ＋ 3 = | 5 × 3 | = | ||
3 | 2 | 7 | 7 | 9 | 10 | ||
48%× 1 = | 5 +12.5% = | 7 － 2 = | 6 | 1 × 8 = | |||
2 | 8 | 9 | 3 | 4 | |||
1－72% = | 2.4 | × 3 = | 3 × 2 = | 1 ＋ 1 = | |||
8 | 8 | 3 | 3 | 7 | |||
二、解方程。 | ||
125%X－X＝28 | X＋ 30%X＝ 65 | X－20%X＝ 1 |
4 | ||
X＋25%X＝2.8 | X－20%X＝16 | X－25%X＝ 3 |
4 | ||
X－15%X＝42.5 2X ＋30%X＝9.2 125%X －X＝44
1
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（1＋ 40%）X＝ 98（1－60%）X＝0.32（ 1－ 70%）X＝0.96
60%X＋25＝40 78%X ＋ 45＝84 1 ＋ 20%X＝ 1
4
三、用简便方法计算。 | ||||
1 ×27+ | 3 × 27 | 32 | × 0.25 — 2 2 | ÷ 4 |
4 | 4 | 5 | ||
5 × 69%+31%× 5 | 1 ×1.8+2.2 ×25% | |
11 | 11 | 4 |
3 | 62.5% | 5 | |
0.375 ×21+ × 79 | ×63+ ×37 | ||
8 | 8 | ||
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