Math Minute 39 - 40

400,000 + 5,000 + 800 + 6

• 450,860

• 450,806

• 405,860

• 405,806

How many sides does each shape have?

• Pentagon - 6

  Octagon - 8

  Decagon - 10

• Pentagon - 5

  Octagon - 8

  Decagon - 10

• Pentagon - 6

  Octagon - 9

  Decagon - 11

• Pentagon - 4

  Octagon - 6

  Decagon - 8

Which is 55%?

• 0.45

• 0.55

• 0.65

• 0.75

Sales tax might be :

• 6%

• 60%

Which number is twice as much as 2,400?

• 4,800

• 1,200

• 4,400

• 480

What is the error in the problem 32 x 9 = 281

• The 1 should be an 8

• The 2 should be a 3

• The 8 should a 7

• The 1 should be a 6

What mistake did Sally make?

• She made a mistake in adding.

• She found the area.

• She didn't add all the sides.

• She didn't make a mistake.

a + b

• 9

• 11

• 10

• 8

b x c

• 20

• 30

• 24

• 34

(a)(c) / 2

• 15

• 30

• 10

• 20