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加法(中级一)

Authored by NG IPG-Pelajar

Mathematics

5th Grade

加法(中级一)
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6 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

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哪个是正确的第一个算式与写法?

(答案可超过一个)

0 + 9 + 1 + 5 + 4 = 19

2 + 1 + 4 = 7

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Answer explanation

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计算后,答案大过9,就要把算出的答案的号码写在下一个数位(除了个位数号码)。

计算后,等于19。所以“1”写在“1”的上面,“9”写在个位。

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

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选出正确的第二个算式与写法。
(答案可超过一个)

1 + 4 + 9 + 3 + 1 = 18

1 + 1 + 4 + 9 + 3 + 1 = 19

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Answer explanation

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计算时,进位的号码也要一起计算。

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

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下一个正确的算式与写法。

(答案可超过一个)

1 + 1 + 7 + 8 + 2 + 1 = 20

1 + 7 + 8 + 2 + 1 = 20

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Answer explanation

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计算时,进位的号码也要被算进去。
答案是二位数时,号码要写在下一个数位。

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

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选出正确的下个步骤与写法。

(答案可超过一个)

2 + 2 + 0 + 6 + 9 + 2 = 20

2 + 2 + 0 + 6 + 9 + 2 = 21

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5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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选出下个步骤的正确写法。

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6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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请选出正确且完整的作答。

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Answer explanation

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算好后,要把答案写在横式的“=”后面。

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