x3 and x4
0 x 4 = ______
0
7 × 7 = ____
49
7 × 9 = ____
63
(1 × 9) × 9 = ____
81
True or False:
Any number x 0 = 0
True
9 × 3 = ____
27
You want to make 6 hexagons using toothpicks. How many toothpicks do you need?
36 toothpicks
8 × 4 = ____
32
6 × (4 × 2) = ____
48
Fill in the blanks.
9 × 7 = ___ × (2 + ___)
= (9 × 2) + (___ × ___)
= ___ + ___
= ___
9 × 7 = 9 × (2 + 5)
= (9 × 2) + (9 × 5)
= 18 + 45
= 63
A container has 8 bouncy balls. You buy 3 containers. How many bouncy balls do you buy in all?
24 bouncy balls
There are 6 faces on a standard die. How many faces are on 7 dice?
42 faces
There are 8 hot dogs in a package. You buy 5 packages. How many hot dogs do you have?
40 hot dogs
Find 2 × (5 × 4).
40
Which one does not belong with the other three?
4 × 9 (2 × 9) + (2 × 9)
(4 × 3) + (4 × 3) 9 × 4
(4 × 3) + (4 × 3)
You need 27 light bulbs. You buy 9 packs of 3 light bulbs. Do you have enough light bulbs?
Yes
You have a baking tray with 6 cups. You use it to bake 60 dinner rolls. How many times do you use the baking tray?
10 times
Which are not multiples of 9?
49 54 67 90 83 72
49, 67, 83
You drink 2 cups of water three times a day. How many cups of water do you drink in one week?
42 cups of water
You draw for 9 minutes each day and you color for 6 minutes each day. In 3 days, how much more time do you spend drawing than coloring?
9 more minutes
Newton makes 6 squares using toothpicks. Descartes makes 9 squares using toothpicks. How many more toothpicks does Descartes use than Newton?
12 more toothpicks
You study for 2 hours in the morning and 2 hours at night each day. How many hours do you study in one week?
28 hours
A bookcase has 8 shelves, with 6 books on each shelf and 1 shelf with 2 books. How many books are there in all?
50 books
Newton says that (3 × 4) × 6 is equal to 4 × (6 × 3). Descartes says that (3 × 4) × 6 is equal to 3 × (4 × 6) Who is correct? Explain.
Both. They all equal 72 -- the grouping doesn't matter (associative property)
You buy 2 shirts, 2 pairs of shorts, and 2 pairs of pants. Shirts cost $8 each, shorts cost $8 each, and pants cost $9 each. How much do you spend in all?
$50