Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

10 + 10 = ?

Back

20

2.

FLASHCARD QUESTION

Front

40 + 40 = ?

Back

80

3.

FLASHCARD QUESTION

Front

20 + 50 = ?

Back

70

4.

FLASHCARD QUESTION

Front

60 + 40 = ?

Back

100

5.

FLASHCARD QUESTION

Front

20 + 20 = ?

Back

40

6.

FLASHCARD QUESTION

Front

What is adding tens?

Back

Adding tens means combining numbers that are multiples of ten.

7.

FLASHCARD QUESTION

Front

What is the sum of 30 and 20?

Back

50

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