Additive Angles — Let's Practice!
Basics on the topic Additive Angles — Let's Practice!
Today we are practicing additive angles with Razzi! This video contains examples to help you further practice and grow confident in this area.
Transcript Additive Angles — Let's Practice!
Razzi says get these items ready because today we're going to practice Additive Angles. It's time to begin! What is the total angle made by these adjacent angles? Pause the video to work on the problem and press play when you are ready to see the solution! Fortyeight plus thirtynine equals eightyseven. Did you also get eightyseven degrees? Let's tackle the next problem! What is the total angle made by these adjacent angles? Pause the video to work on the problem and press play when you are ready to see the solution! Fortytwo plus thirtytwo plus seventytwo equals one hundred fortysix. Did you also get one hundred fortysix degrees? Let's try another. What is the measurement of the missing angle? Pause the video to work on the problem and press play when you are ready to see the solution! One hundred thirtyfive minus fiftyfour equals eightyone. Did you also get eightyone degrees? Let's tackle the final problem! What is the measurement of the missing angle? Pause the video to work on the problem and press play when you are ready to see the solution! Thirtysix plus fifty plus fortyseven is one hundred thirtythree. One hundred eighty minus one hundred thirtythree equals fortyseven. Did you also get fortyseven degrees? Razzi had so much fun practicing with you today! See you next time!
Additive Angles — Let's Practice! exercise

Find the combined angles.
HintsIn this example, to find the combined angles we add 20 + 45.
When adding the two angles, try adding the ones first and then the tens.
Solution 31° + 52° = 83°
 39° + 47° = 86°
 47° + 71° = 118°
 52° + 32° = 84°

What is the total of the combined angles?
HintsTo find the total, all three angles must be added together.
Try partitioning each number and adding the tens and ones separately.
First add two angles together, then add the third angle on to this total.
Solution26° + 52° + 32° = 110°

What is the total of the two angles?
HintsFirst find the value of the two angles that must be added together.
Angle (a) is 36° and angle (b) is 42°, now we need to add these together to find the combined amount.
Solution36° + 42° = 78°.

What do the angles total?
HintsThere are three angles that we need to add together.
Try adding the tens and ones separately, for example, first add 70 + 60 + 20.
Solution75° + 60° + 24° = 159°.
We could solve this by first adding the tens: 70 + 60 + 20 = 150 then adding the ones, 5 + 0 + 4 = 9 before combining these two answers together. 150 + 9 = 159°.

What is the sum of the combined angles?
HintsTo find the combined angles, the two separate angles need to be added together.
What is 38 + 22?
Try adding the ones first and then the tens.
Solution38° + 22° = 60°

Find the missing angle.
HintsWe know that (a) + (b) + (c) = 152. What is the total of (a) + (c)?
(a) + (c) or 35° + 78° = 113°. What do we need to do next to find angle (b)?
152  113 will give the answer to the missing angle (b).
Solution (a) + (b) + (c) = 152°
 (a) + (c) = 113°
 152  113 = 39°
 We can check this by adding all three angles together: 35 + 39 + 78 = 152.