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Two-Digit Ops and Angle Types Quiz

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Math: add, subtract, multiply, divide; acute to straight angles

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Two-Digit Ops and Angle Types Quiz
 

Two-Digit Ops and Angle Types QuizOnline version

Math: add, subtract, multiply, divide; acute to straight angles

by ALADEN BALATOKAY
1

58 + 27 = ?

2

74 - 29 = ?

3

23 × 11 = ?

4

96 ÷ 12 = ?

5

An angle of 30 degrees is called a(n) ?

6

An angle of 90 degrees is a(n) ?

7

Which angle is greater than 90° but less than 180°?

8

A straight angle measures ? degrees.

9

43 + 27 = ?

10

67 - 29 = ?

11

Compute 128 + 57.

12

Compute 102 - 47.

13

Compute 144 ÷ 12.

14

A factory makes 7 batches of 8 widgets. How many widgets total?

15

An angle measures 40 degrees. Is it acute, obtuse, right, or straight?

16

An angle measures 120 degrees. Classify it.

17

An angle measures 90 degrees. Classify it.

18

An angle measures 180 degrees. Classify it.

19

Write 0.00072 in standard form.

20

A store sells 3 packs of 9 pencils and 2 packs of 7 pencils. How many pencils total?

Feedback

Sum of 58 and 27 is 85 because 50+20=70 and 8+7=15; 70+15=85.

Subtract units: 4-9 can't, borrow; 14-9=5; tens 6-2=4; 45.

23×11 = 23×10 + 23 = 230 + 23 = 253.

12×8 = 96, so 96÷12 = 8.

Acute angles are less than 90 degrees.

A 90° angle is a right angle.

Obtuse angles measure between 90° and 180°.

A straight angle is a line, 180°.

43+27 = 70; 40+20=60, plus 3+7=10; total 70.

Borrow 1 from tens: 17-9=8; 5-2=3; 38.

128 + 57 equals 185.

102 minus 47 is 55.

144 divided by 12 equals 12.

7 × 8 = 56 widgets.

Angles less than 90° are acute.

Angles between 90° and 180° are obtuse.

Exactly 90° is a right angle.

180° forms a straight line, a straight angle.

0.00072 = 7.2 × 10^-4.

3×9=27 and 2×7=14; 27+14=41.

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