Recognizing Helper Facts in 3rd Grade Math

The video tutorial for third graders covers lesson 5.4 on recognizing helper facts in multiplication. It begins with a warm-up exercise and explains how to use known multiplication facts to solve unknown ones. The teacher demonstrates using twos, threes, tens, and fives as helper facts. Students are guided through journal exercises and number story problems to apply these concepts in real-world scenarios.

What do you need for today's lesson on recognizing helper facts?

• Calculator and notebook

• Whiteboard and math journal

• Textbook and pencil

• Computer and internet

If you don't know 9 times 6, which fact could help you find the answer?

• 8 times 6

• 7 times 6

• 10 times 6

• 9 times 5

How can knowing multiplication by 2 help in multiplying by 3?

• Add a group of two

• Divide by two

• Subtract a group of two

• Multiply by two

What is 3 times 9 if you know 2 times 9?

• 18

• 21

• 27

• 24

How can you use the tens facts to solve 9 times 8?

• Add 10 to 80

• Subtract 8 from 80

• Divide 80 by 10

• Multiply 10 by 8

What is 4 times 8 if you know 5 times 8?

• 36

• 40

• 32

• 28

If Jessica earns double what Savannah earns and Savannah earns $5, how much do they have together?

• $25

• $15

• $20

• $10

Vijay has two packs of eight stickers each and gives away three. How many does he have left?

• 13 stickers

• 15 stickers

• 10 stickers

• 11 stickers

A baker uses 2 kg of his 10 kg flour to make muffins. How much flour is left?

• 7 kg

• 8 kg

• 10 kg

• 9 kg

If the baker divides the remaining flour into four bags, how much flour is in each bag?

• 2 kg

• 2.5 kg

• 3 kg

• 1.5 kg