EXPRESSIONS
5 x (64 + 36)
Write this expression in words.
5 times the sum of 64 and 36.
Bonus: Solve.
1.391 x 1,000
1,391
Compare:
100 x 4 and 25 x (2 x 8)
100 x 4 = 25 x (2 x 8)
400 = 400
How many inches are in 1 foot?
12 inches = 1 foot
Via makes pies to sell at the school play and covers them with plastic wrap. Each pie requires 1.75 yards of plastic wrap.
How many feet of plastic wrap is that?
1 yard = 3 feet
1.75 yards = 5.25 feet
3 times the difference between 120 and 70?
Write in numeric form and solve.
3 x (120 - 70)
3 x 50 = 150
123 x 256
31,488
Compare 33 x 11 and 36 elevens - 4 elevens
33 x 11 > 36 elevens - 4 elevens
33 x 11 > 32 elevens
How many feet are in 1 yard?
3 feet
Via makes pies to sell at the school play and covers them with plastic wrap. Each pie requires 1.75 yards of plastic wrap.
a. At the store, the plastic wrap is sold by the foot. If Via wants to make 84 pies, how many feet of plastic wrap must she buy?
84 x 5.25 = 441 feet
She needs to buy 441 feet of plastic wrap.
What is 4 twenty-fives, doubled?
= 100 x 2
= 200
51 x 1.5
76.5
Compare the sum of 3 tens and 2 tens with the product of 5 and 10.
(3 x 10) + (2 x 10) 5 x 10
= 30 + 20 = 50
=50
50 = 50
How many inches are in 1 yard?
36 inches = 3 feet = 1 yard
How many cents are in $1?
100 cents = $1
What is another way of saying 2 fifteens?
2 x 15
30
2 x 103
2 x 103
= 2 x 1,000
= 2,000
What property tells you that 25 x (2 x 5) is equivalent to (25 x 2) x 5?
The Associative Property tells me that when three or more numbers are multiplied, the product is the same regardless of the grouping.
How many meters are in 4 kilometers?
1 kilometer = 1,000 meters
4 kilometers = 4,000 meters
How do you write 10 cents as a decimal?
0.10
10 twenty-fours, doubled
(10 x 24) x 2
= 240 x 2
=480
423 x 205
86,715
Compare 66 x 10 and 6.6 x 10. Explain
66 x 10 is greater than 6.6 x 10
...because 66 is ten times greater than 6.6, therefore the product of 66 x 10 is ten times greater than 6.6 x 10.
How many milligrams are in 2 grams?
1,000 grams = 1 gram
2,000 grams = 2 grams
Via makes pies to sell at the school play and covers them with plastic wrap. Each pie requires 1.75 yards of plastic wrap.
b. If the plastic wrap costs 10 cents per foot, what is the total cost of the plastic wrap in dollars? Explain!
441 x 0.10 = $44.1 Total Cost of plastic wrap
10 cents is the same as $0.10, and when I multiply that by the number of feet of plastic wrap, 441, I get $44.1 because I am multiplying by one tenth, and $44.1 is one tenth of 441.