Arithmetic Operations and Patterns

This video tutorial for third graders covers math lesson 211 on frames and arrows. It begins with a warm-up exercise on fact families, using addition and subtraction. The lesson progresses to practicing fact families with multiplication and division. Students then learn to identify patterns in number sequences, using frames and arrows to find rules. The tutorial concludes with solving number stories using multiplication models and arrays.

What is the turnaround fact for the addition 6 + 4?

• 6 + 4 = 12

• 4 + 6 = 12

• 10 - 6 = 4

• 4 + 6 = 10

Which of the following is a correct division fact for the multiplication 2 x 8 = 16?

• 16 ÷ 4 = 2

• 16 ÷ 8 = 4

• 16 ÷ 2 = 8

• 8 ÷ 2 = 4

If a sequence starts with 37, 40, 43, what is the next number?

• 49

• 46

• 45

• 47

In the sequence 27, 25, __, 21, what number should fill the blank?

• 20

• 22

• 24

• 23

What is the rule for the sequence 1, 2, 4, 8?

• Add 4

• Add 2

• Multiply by 4

• Multiply by 2

What is the rule for the frames and arrows pattern starting with 10 and adding 5 each time?

• Add 3

• Subtract 5

• Add 5

• Multiply by 5

If the rule is to subtract 5, what is the next number after 70?

• 75

• 60

• 55

• 65

How many markers are there in total if Mrs. Kwan has 4 boxes with 10 markers each?

• 50

• 30

• 20

• 40

Monica has 5 shelves with 7 dolls each. How many dolls does she have in total?

• 30

• 35

• 25

• 40

What is the multiplication model for 5 shelves with 7 dolls each?

• 5 x 5

• 5 x 7

• 7 x 7

• 7 x 5