This video tutorial for first graders introduces the concept of finding 10 more or 10 less than a number using a 100 chart. The teacher demonstrates how to use the chart to count forward or backward by 10, highlighting the pattern that emerges. The lesson also includes using tens and ones blocks to verify the results. Examples with different numbers are provided, and students are encouraged to practice on their own. The video concludes with a brief review and homework instructions.

What is 10 less than 45?

• 35

• 55

• 25

• 65

Tags

CCSS.1.NBT.C.5

What is 10 more than 45?

• 55

• 35

• 75

• 65

Tags

CCSS.1.NBT.C.5

On a 100 chart, where is 35 in relation to 45?

• Right above

• Right below

• Left side

• Right side

Tags

CCSS.1.NBT.B.3

Using tens and ones blocks, how many tens are in 45?

• 3

• 5

• 4

• 6

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What number is 10 less than 77?

• 87

• 57

• 67

• 97

Tags

CCSS.1.NBT.C.5

What number is 10 more than 77?

• 87

• 97

• 107

• 67

Tags

CCSS.1.NBT.C.5

If you move up one row on a 100 chart from 77, what number do you find?

• 67

• 87

• 77

• 57

Tags

CCSS.1.NBT.C.5

What is 10 less than 28?

• 28

• 8

• 38

• 18

Tags

CCSS.1.NBT.C.5

What would be 10 more than 28?

• 38

• 18

• 48

• 58

Tags

CCSS.1.NBT.C.5

How does the 100 chart help in finding 10 more or less?

• By adding or subtracting

• By coloring squares

• By moving left or right

• By moving up or down a row

Tags

CCSS.1.NBT.C.5