Subtraction Using Tens

What is the main focus of the lesson on subtraction using tens?

• Dividing numbers to reach five

• Adding numbers to reach twenty

• Subtracting numbers to reach ten

• Multiplying numbers to reach ten

In the example with Scott and his crayons, how many crayons does he have left after giving some away?

• 12 crayons

• 10 crayons

• 8 crayons

• 5 crayons

What pattern is observed in the subtraction problems discussed?

• The subtraction always results in zero

• The numbers always add up to twenty

• The unit's digits are the same when subtracting

• The tens digit always changes

How can you simplify the subtraction problem 14 - 6 using tens facts?

• Break 6 into 3 and 3

• Add 6 to 14 and then subtract 10

• Break 6 into 4 and 2, subtract 4 first

• Subtract 6 directly from 14

What is the result of 12 - 5 using tens facts?

• 8

• 10

• 7

• 5

When using tens facts, how is the number 6 broken down in the problem 11 - 6?

• Into 3 and 3

• Into 2 and 4

• Into 6 and 0

• Into 1 and 5

What is the final result of 15 - 7 using tens facts?

• 8

• 9

• 7

• 6

In the example 13 - 7, how is the number 7 broken down?

• Into 3 and 4

• Into 5 and 2

• Into 6 and 1

• Into 7 and 0

What is the result of 10 - 4 in the context of the lesson?

• 5

• 7

• 6

• 4

Why is ten considered a good number to use in subtraction?

• It simplifies subtraction problems

• It is easy to multiply

• It is a prime number

• It is the largest single-digit number