vocabulary
34 x 14 = 14 x 34 is an example of...
commutative property
24 x 15
360
Use the lattice strategy for 37 x 89
3,293
Penelope gets $14 each week. She spends $5 on ice cream every Saturday. How much money will she have at the end of 11 weeks? Write an equation.
($14-$5) x 11 = $99
Estimate - 34 x 46
30 x 50
give an example of distributive property
answer will vary but must have:
34 x 10 = (30 x 10) + (4 x 10)
= 300 + 40
= 340
32 x 14 =
448
Use partial products to find 77 x 11
847
The average person eats 57 hot dogs per year. Justin is 24 years old. How many hot dogs would he have eaten during his lifetime? Write an equation.
57 x 24 = 1,368 hotdogs
Estimate 76 x 12
80 x 10
In 47 x 2 = 94
the multiplication symbol represents this process
operation
37 x 48
1,776
A soccer player has 45 jerseys from the teams she played on. Each jersey cost $17 each. How much did she spend on each jersey?
$765
Markus and Chris are baking 17 pumpkin pies for Ms. B. Ms B needs 32 slices per pie. How many pumpkin slices does she need in all? Write an equation
17 x 32 = 544 pumpkin pie slices.
estimate 65 x 75
70 x 80
When you find part of the product for each factor and add the sum for your final answer, you are finding the _________
partial products
83 x 69
5,727
Ms. B has 15 students in her class. Each student has 24 pencils. How many pencils do they have altogether?
360 pencils
Josh has 42 copies of the book: Bees' Knees and 22 copies of the book: Cat's Meow. Each book sells for $8. How much money will he make if he sold each one? Write an equation
(42 x $8) + (22 x $8) = 336 + 176
= $512
estimate 43 x 21
40 x 20
When the GROUPING of the factors does not change the product, this property is...
associative property
110 x 12
1,320
Kolby makes $15 an hour. He worked 4 hours each weekday and 10 hours over the weekend. How much money will she make? Write an equation.
((4x5) + 10) x 15 = $450
Marion is buying each science class a new piece of equipment. She is spending $99 on each equipment. How much will she spend on equipment if there are 24 science classes?
99 x 24 = $2,376
estimate 77 x 79
80 x 80