Make a Number Line to Add
Basics on the topic Make a Number Line to Add
Content
What do you learn about making a number line to add?
There are many tools and strategies to solve addition problems, one of which is using a number line! When using a number line to add...
Start by drawing a number line.
Next, put the larger addend on the left side under the first dash.
Then, skip count forward the smaller addend.
Finally, the number that you land on is your sum, or the answer to your equation!
Transcript Make a Number Line to Add
: "Okay, we've got it (...) the PERFECT treehouse." : "Now all we need to do is get the materials and BUILD it!" Mr. Squeaks is ready to work (...) but first, he needs to add his materials to make sure he has the right amount of everything. : "Make a Number Line to Add." Mr. Squeaks can use a number line to add his materials together. First, he has twentyone wood planks and fortyfive nails, but he is unsure if he bought enough. He needs to add the number of wood planks and nails together using the number line. When adding using a number line, start by drawing the number line. Then, put the larger addend on the LEFT side under the first dash. We need to put FORTYFIVE on the LEFT side since it is the largest number. Next, we can skip count forward depending on the other addend (...) here it is twentyone. We can break twenty apart into two tens and then skip count forward by tens. Let’s skip count (...) ten more than fortyfive is fiftyfive and ten more than fiftyfive is sixtyfive. Then, we add smaller amounts for the rest. We only have one left, so we add one more. Finally, we can find our sum by looking at the number that we ended on last. Mr. Squeaks has sixtysix wood planks and nails all together (...) which is enough! Next, Mr. Squeaks is adding his roof tiles. He wants to make a pattern out of the two different colors, but he needs to see how many he has in total. If Mr. Squeaks has thirtyseven orange roof tiles and fortythree blue roof tiles, how many does he have in total? Start by creating an equation and draw the number line. We create thirtyseven plus fortythree. Next, put the larger addend on the LEFT side. The larger addend in this equation is fortythree, so, we'll put it on the LEFT side. Finally, skip count forward by small amounts of the other addend. We can skip count by tens to reach seventythree and then count on seven. The final step is to find the sum by looking at the number we ended on (...) eighty. That means Mr. Squeaks has eighty roof tiles. Finally, Mr. Squeaks also has some flowers to decorate with. If Mr. Squeaks has sixtyseven blue flowers, and twentyfive orange flowers, how many does he have in all? Remember, we can put the larger addend on the LEFT side. Then, we need to skip count forward the other addend, twentyfive. If we skip count forward small amounts of twentyfive, what number will we land on? We will land on the number ninetytwo. Mr. Squeaks has ninetytwo flowers in all. Before we see that treehouse, let's summarize. When making a number line to add, remember (...) First, create an equation and draw your number line. Next, put the larger addend on the left side. Then, skip count forward the smaller addend. Finally, the number that you land on is your sum! Now, let's see that treehouse! : "Hmm (...) where did all of my nails go?" : "Imani!"
Make a Number Line to Add exercise

What are the steps to make a number line to add?
HintsWhat do we need to do before we put the larger addend on the left?
What do we need to do with the smaller addend in order to get our sum?
SolutionFirst, we draw a number line.
Second, we put the larger addend on the left. In this problem, 43.
Third, we skip count the smaller addend. In this problem +10 three times and then +7 (making 37).
Finally, we find our sum, which in this problem, is 80.

Use the number line to find the sum.
HintsHere you can see that 56 + 10 is 66.
Keep counting up to find your sum!
Finding your sum is the last step, so look for the last number on the number line to find your solution.
SolutionThe answer is 88! We put 56, our larger addend, first and count up by 10s and then 2 in order to fill in our number line.

Can you use a number line to find the sum?
HintsRemember to start by counting by intervals of 10 to reach your final answer!
Be sure to identify which is the larger addend and start by putting that on the left.
Solution22 + 34 = 56
 We put 34 to the left of our number line because it is the larger addend.
 Then we count up by 10 two times: 44, 54.
 We have 2 more seeds remaining, so we add those 2 to get our final answer, 56.

Can you use a number line to find the sum?
HintsMake sure that you put the largest addend on the left.
Remember that you need to skip count to find your solution. Use the number line above to help.
Solution First we find our largest addend 57 and put it on the left of our number line.
 Then we skip count by 10 three times and reach 87.
 We still need to add 5 more, which gives us our answer: 92 nails.

Solve the word problem.
HintsIf Mr. Squeaks has fewer cookies than Imani, that means that Imani has more cookies than Mr. Squeaks, so we need to add these numbers.
Remember to add all of the cookies. 10 have already been added, how many more need to be added to find the sum?
SolutionFirst, we identify our larger addend, 45 cookies. Then we skip count by 10 to add the 13 more cookies Imani has. This leads us to 55 cookies. We need to add 3 more. Imani has 58 cookies in total.

Solve the word problem.
HintsYou can separate this problem into two separate number lines on your own if it makes it easier to solve.
Start with 25 and + 10 three times. You count by 10 three times because you're adding 2 tens from 20 and 1 ten from 12.
Solution First, we identify our largest addend, 25 bracelets.
 Then we skip count by 10 to add the 20 more bracelets Imani made. This leads us to 45 bracelets.
 We then skip count again by 10 to reach 55 bracelets.
 We need to add 2 more.