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小數乘除法溫習

Authored by 陳明蔚 老師

Mathematics

5th Grade

Used 4+ times

小數乘除法溫習
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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 BLANK 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:_____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 BLANK 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:____天

Answer explanation

109.8 ÷ 14.7 ≈ 7.5 (天)

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