Vocabulary
What is a variable?
Any letter that you are trying to solve for in an equation. Ex: v,b,c
What is 24 x 5?
120
What is 250 x 2?
500
What is 1,243 x 3?
3,729
A school has 124 pencils in each box. The school buys 3 boxes. How many pencils does the school have altogether?
372 pencils
What is a numerical expression?
Combines numbers and operations without an equal sign.
What is 1,000 x 7?
7,000
What is 371 x 4?
1,484
What is 2,323 x 4?
9,292
A bakery makes 236 cookies each day. How many cookies will the bakery make in 4 days?
944 cookies
What is the distributive property?
multiply a number by each part inside parentheses and then add or subtract the answers.
Ex: 3 × (4 + 2)
What is 350 x 4?
1,400
What is 601 x 3?
1,803
What is 3,641 x 8?
29,128
A library has 1,125 books on each of 3 shelves.
How many books are on the three shelves altogether?
3,375 books
What is the associative property?
change the way numbers are grouped when multiplying, and the answer stays the same.
Ex. (2 × 3) × 4 = 2 × (3 × 4)
6 × 4 = 2 × 12
24 = 24
What is 98 x 7?
686
What is 991 x 8?
7,928
What is 4,888 x 9?
43,992
A school orders 2,408 sheets of colored paper for each grade level. There are 4 grade levels placing the same order. How many sheets of colored paper are ordered altogether?
9,632 sheets of colored paper
What is the commutative property of multiplication?
change the order of the numbers when multiplying, and the answer stays the same.
Ex. 3 × 5 = 5 × 3
15 = 15
What is 9,875 x 6?
59,250
What is 987 x 9?
8,883
What is 8,798 x 9?
79,182
A factory packages 3,426 toys each day. The factory operates for 7 days. How many toys does the factory package in 7 days?
23,982 toys