Math Review

Angles

100

What angle is 90 degrees?

Right angle

200

Is a straight angle 179 degrees?

No

300

What angle is less than 180 degrees?

Obtuse angle

400

Is a reflex angle 180 degrees?

No, a reflex angle is more than 180 degrees

500

What is an obtuse angle?

More than 90 degrees and less than 180 degrees

Expanded Form

100

10+4

14

200

800+80+5

885

300

1,000+400+50+7

1,457

400

60,000+8,000+500+40+2

68,542

500

900,000+30,000+4,000+700+20+8

934,728

Standard Form

100

89

80+9

200

457

400+50+7

300

1,984

1,000+900+80+4

400

46,928

40,000+6,000+900+20+8

500

506,982

500,000+6,000+900+80+2

Adding

100

Is 0 a number?

Probably

200

5x6=?

30

300

12x6=?

72

400

8x7=?

56

500

12x12=?

144

Place Value

100

1,894 What is the 3rd digit?

800

200

19,846 What is the digit in the ten thoudsands place?

1

300

5,967.8 What is the digit in the tenths place?

8

400

102,837.54 What is the digit in the hundredths place?

4

500

7,652,918.43 What is the digit in the tens place?

1