Give this before the unit. It doesn't test the new standard (7.G.B.5, complementary and supplementary angles). It checks the grade 4 and grade 6 skills that standard builds on, so you can see who is ready and what to review first. It isn't meant to be graded. The answer key, with what each part tells you and how to reteach it, prints on its own page after it.

Pre-Assessment: Getting Ready for Angle Pairs

Grade 7 · Checks earlier skills: 4.MD.C.5, 4.MD.C.6, 4.MD.C.7, 4.G.A.2, 6.EE.B.7

Name

Date

Part A: Measuring angles 4.MD.C.5, 4.G.A.2

1. The clock shows 3:00. How many degrees is the angle between the hands? What kind of angle is it?

° kind:

2. A pizza is cut into 8 equal slices. A full turn is 360°. What angle does one slice make?

one slice = °

3. Name each angle: acute, right, obtuse or straight.

How sure do you feel? Not yet A little I've got it

Part B: Reading a protractor 4.MD.C.6

4. What does the angle measure?

angle = °

5. What does the angle measure?

angle = °

How sure do you feel? Not yet A little I've got it

Part C: Angles add up 4.MD.C.7

6. How big is the whole angle?

whole = °

7. The whole angle is a right angle (90°). Find the missing part.

? = °

8. The two parts make a straight line (180°). Find the missing part.

? = °

How sure do you feel? Not yet A little I've got it

Part D: Equations 6.EE.B.7

9. Solve: x + 35 = 90

x =

10. Solve: 125 + x = 180

x =

11. An angle x and a 48° angle make a right angle. Write an equation and solve it.

x = °

How sure do you feel? Not yet A little I've got it

Answer Key: Pre-Assessment

Getting Ready for Angle Pairs · for the teacher

90°, a right angle
360 ÷ 8 = 45°
a) acute (15°) b) straight (180°) c) obtuse (100°) d) right (90°)
120°
40°
25 + 40 = 65°
90 − 30 = 60°
180 − 110 = 70°
x = 55
x = 55
x + 48 = 90 → x = 42°

What each part tells you

Part	Why it matters for this unit	If many students miss it
A: Measuring angles	Complementary and supplementary are defined by 90° and 180°.	Use a clock and a pizza: quarter turn = 90°, half turn = 180°, full turn = 360°.
B: Protractor	Students check their answers by measuring, and the game's angles are drawn to scale.	Practice which scale to read: the one that starts at 0 on the angle's first side.
C: Angles add up	#7 and #8 are complementary and supplementary angles before they have names.	Fold paper: a corner is 90°, a fold line is 180°. Cut it into two angles and measure.
D: Equations	Every missing angle is an equation like x + 35 = 90; the game's Hole-In-One Hero mode uses them.	Review with Tip the Scales (one-step equations).

Reading the results: students who get #7, #8 and #11 right already understand the idea; they only need the words complementary and supplementary, and the visual notes give them those. Compare the “How sure do you feel?” circles with the answers: a student who circles “I've got it” but misses the part is worth a quick conversation.