Addition of Two Numbers

The video tutorial explains how to add the numbers 37 and 129. It begins by setting up the numbers vertically, aligning the place values, and then proceeds to add the digits in the ones and tenths places. The tutorial highlights the commutative property of addition, showing that the order of numbers does not affect the sum. Finally, it uses a number line to visually demonstrate the addition process, confirming that the sum is 166.

What is the first step in adding 37 and 129?

• Write the numbers vertically

• Write the numbers horizontally

• Subtract the smaller number from the larger

• Multiply the numbers

When adding 7 and 9 in the ones place, what is the result?

• 15

• 16

• 18

• 17

What do you do with the '1' when you get 16 from adding 7 and 9?

• Place it in the hundreds place

• Ignore it

• Carry it over to the tenths place

• Subtract it from the sum

What does the commutative property of addition state?

• The sum is always negative

• The sum remains the same regardless of the order

• The sum is always zero

• The sum changes if the order changes

How can you write the sum of 37 and 129 using the commutative property?

• 37 + 129 = 37 * 129

• 37 + 129 = 129 - 37

• 37 + 129 = 37 - 129

• 37 + 129 = 129 + 37

On a number line, where do you end up after moving 129 units to the right from 37?

• 166

• 129

• 37

• 0