Breaking Apart Numbers to Subtract

This video tutorial covers a second-grade math lesson on breaking apart numbers to subtract. It begins with an introduction to the concept, followed by a demonstration of using a number line for subtraction. The teacher then explains how to perform subtraction without a number line, providing a step-by-step guide. The lesson concludes with an example problem, 84 minus 19, solved using different methods to reinforce the concept.

What is the main focus of the lesson in this video?

• Dividing numbers using long division

• Multiplying numbers using a grid

• Breaking apart numbers to subtract

• Adding numbers using a number line

What is the difference between today's lesson and yesterday's homework?

• Using fractions

• Using single-digit numbers

• Using double-digit numbers

• Using triple-digit numbers

What is the first step in breaking apart numbers to subtract?

• Look at the ones

• Look at the thousands

• Look at the tens

• Look at the hundreds

When breaking apart 14, what two numbers are used?

• 5 and 9

• 6 and 8

• 4 and 10

• 7 and 7

What is the result of 80 minus 10 in the example?

• 50

• 70

• 60

• 80

What is the final answer after subtracting 3 from 70?

• 63

• 65

• 69

• 67

What is the first number you subtract in the first example?

• 5

• 7

• 10

• 3

What is the final answer in the first example using a number line?

• 67

• 66

• 65

• 64

What is the starting number in the second example?

• 94

• 74

• 84

• 81

How many more do you subtract after reaching 74 in the second example?

• 5

• 6

• 9

• 4