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Assess Yourself

How well do you understand the ideas in this lesson?

Goal:

Goal:

monkey with checkmark and cross

Show What You Know!

Assess how well you met your goals.

Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.

Which number is even?

  1. 3
  2. 5

Sorry, that is not right. 2 is even. It is made up of a group of 2.

Sorry, that is not right. 2 is even. It is made up of a group of 2.

Yes! 2 is even. It is made up of a group of 2.

Which sentences match the array?

2 by 3 array of green dots

  1. 2 + 2 + 2 + 2 = ?
    4 x 2 = ?

  2. 2 + 2 = ?
    2 x 2 = ?

That is right! 2 + 2 + 2 and 3 x 2 match the array.

Sorry, that is not right. 2 + 2 + 2 and 3 x 2 match the array.

Sorry, that is not right. 2 + 2 + 2 and 3 x 2 match the array.

Which skip-counting sequence can we use to find the answer?

2 by 4 array of green dots

  1. 5, 10, 15, 20
  2. 2, 4, 6

Sorry, that is not correct. There are 4 rows of 2. We will skip count by 2s four times.

Great job! There are 4 rows of 2. We will skip count by 2s four times.

Sorry, that is not correct. There are 4 rows of 2. We will skip count by 2s four times.

What is the answer?

2 by 5 array of green dots

2 + 2 + 2 + 2 + 2 = ?
5 x 2 = ?

  1. 14
  2. 20

Sorry, that is not correct. 5 x 2 = 10.

Sorry, that is not correct. 5 x 2 = 10.

Excellent! 5 x 2 = 10.

Which number is even?

  1. 9
  2. 7

Yes! 6 is even. It is made up of groups of 2.

Sorry, that is not right. 6 is even. It is made up of groups of 2.

Sorry, that is not right. 6 is even. It is made up of groups of 2.

Which sentences match the array?

2 by 6 array of green dots

  1. 2 + 2 + 2 + 2 + 2 = ?
    5 x 2 = ?

  2. 2 + 2 + 2 + 2 = ?
    4 x 2 = ?

Sorry, that is not right. 2 + 2 + 2 + 2 + 2 + 2 and 6 x 2 match the array.

Sorry, that is not right. 2 + 2 + 2 + 2 + 2 + 2 and 6 x 2 match the array.

That is right! 2 + 2 + 2 + 2 + 2 + 2 and 6 x 2 match the array.

Which skip-counting sequence can we use to find the answer?

2 by 7 array of green dots

  1. 2, 4, 6, 8, 10, 12
  2. 2, 4, 6, 8, 10

Great job! There are 7 rows of 2. We will skip count by 2s seven times.

Sorry, that is not correct. There are 7 rows of 2. We will skip count by 2s seven times.

Sorry, that is not correct. There are 7 rows of 2. We will skip count by 2s seven times.

What is the answer?

2 by 8 array of green dots

2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = ?
8 x 2 = ?

  1. 14
  2. 20

Sorry, that is not correct. 8 x 2 = 16.

Excellent! 8 x 2 = 16.

Sorry, that is not correct. 8 x 2 = 16.

Which skip-counting sequence can we use to find the answer?

2 by 9 array of green dots

  1. 2, 4, 6, 8, 10, 12, 14
  2. 2, 4, 6, 8, 10, 12, 14, 16

Sorry, that is not correct. There are 9 rows of 2. We will skip count by 2s nine times.

Sorry, that is not correct. There are 9 rows of 2. We will skip count by 2s nine times.

Great job! There are 9 rows of 2. We will skip count by 2s nine times.

What is the answer?

2 by 10 array of green dots

2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = ?
10 x 2 = ?

  1. 18
  2. 16

Excellent! 10 x 2 = 20.

Sorry, that is not correct. 10 x 2 = 20.

Sorry, that is not correct. 10 x 2 = 20.

Summary

Questions answered correctly:

Questions answered incorrectly: