Unit 2 Math Review

There are 7 cat toys for $6 each. How much do all 7 toys cost together? Which multiplication equation would match this problem?

• 7 x 6 = $24

• 7 x 6 = $42

• 7 x 6 = $13

• 7 x 6 x 7 = $20

Four bags of bird food cost a total of $16.00. How much does each bag cost? Which division equation matches the problem?

Three bags of iguana food cost a total of $24.00. How much does each bag cost? Which division equation matches the problem?

Which multiplication equation represents this array?

• 3 x 6 = 15

• 3 x 6 = 18

• 3 x 5 = 15

• 4 x 4 = 16

Which multiplication equation represents this array?

• 4 x 5 = 9

• 4 x 5 = 24

• 4 x 5 = 16

• 4 x 5 = 20

Which multiplication equation represents this array?

• 6 x 6 = 36

• 7 x 6 = 36

• 6 x 7 = 42

• 6 x 6 = 42

Which multiplication equation represents this array?

• 3 x 8 = 18

• 3 x 6 = 18

• 3 x 6 = 12

• 3 x 6 = 24

If the plant is 12 cm long, about how long is the ruler? How do you know?

• The ruler is about 24 cm long because it is about twice as long as the plant.

• The ruler is about 36 cm long because it is about three times as long as the plant.

• The ruler is about 48 cm long because it is about four times as long as the plant.

• The ruler is about 6 cm long because it is about half as long as the plant.

If the small fishbowl is 7 inches tall, about how tall is the large fishbowl? How do you know?

• The large fishbowl is about 24 inches tall because it is about twice as tall as the small fishbowl.

• The large fishbowl is about 3 inches tall because it is about half as tall as the small fishbowl.

• The large fishbowl is about 14 inches tall because it is about twice as tall as the small fishbowl.

• The large fishbowl is about 28 inches tall because it is about four times as tall as the small fishbowl.

How can you use 2 x 6 to find 4 x 6?

• I can use the Double-Doubles Strategy. I know that 2 x 6 = 12, and I can just double that to get 4 x 6 because 4 is 2 + 2.

• I can use my Doubles facts to do 8 + 8 = 16, which is the answer to 4 x 8.

• I can use the Double-Doubles Strategy. I know that 2 x 6 = 48, and I can just double that to get 4 x 6 because 4 is 2 + 2.

• I can use my Doubles facts to do 6 + 6 = 12, which is the answer to 4 x 6.