
小數乘除法溫習
Authored by 陳明蔚 老師
Mathematics
5th Grade
Used 4+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
在計算 2.08 ÷ 1.389 時應該把算式倍大至怎樣才方便計算 ?
208 ÷ 1389
208 ÷ 138.9
2080 ÷ 1389
208 ÷ 13.89
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
46.3 ÷ 7 = ? (答案取至百分位)
6.61
66.14
6.62
6.64
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
62.5 ÷ 59 =? (答案取至百分位)
1.06
1.59
1.05
1.059
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
以下哪一條算式符合題中描述?
5.2公斤香珠售70.2元,媽媽買1.6公斤香珠,應付多少元?
5.2 ÷ 70.2 × 1.6
70.2 ÷ 5.2 × 1.6
70.2 ÷ 1.6 × 5.2
Answer explanation
70.2 ÷ 1.6 × 5.2
正比例。
70.2 ÷ 1.6先找出1公斤香珠售多少元。
再乘以5.2找出5.2公斤香珠售多少元
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
以下哪一條算式符合題中描述?
1.4公斤榴連跟2.5公斤山竹價錢相同,榴連每公斤68元,那麼每公斤山竹是多少元?
68 × 1.4 ÷ 2.5
68 × 2.5 ÷ 1.4
2.5 ÷ 1.4 × 68
Answer explanation
70.2 ÷ 1.6 × 5.2
正比例。
70.2 ÷ 1.6先找出1公斤香珠售多少元。
再乘以5.2找出5.2公斤香珠售多少元
6.
FILL IN THE BLANKS QUESTION
3 mins • 1 pt
蛋糕店有2.25公斤巧克力粉,店員把巧克力粉每0.375公斤裝成一包,製作一個蛋糕需要0.5包巧克力粉。餅店有的巧克力粉可做蛋糕多少個?ans: (a) 個
Answer explanation
2.25 ÷ 0.375 ÷ 0.5
2.25 ÷ 0.375可找分到6包巧克力粉。再除以0.5即可找到可做多少個蛋糕。
7.
FILL IN THE BLANKS QUESTION
3 mins • 1 pt
家倩每天儲蓄14.7元,她想買一個售109.8元的小飾物,她最少需要儲蓄多少天?ans: (a) 天
Answer explanation
109.8 ÷ 14.7 ≈ 7.5 (天)
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