Fact Families
Write the complete fact family for the numbers: 7, 21 and 3
7 x 3 =21
3 x 7=21
21/7=3
21/3=7
What is the definition of an array?
A set of groups in equal columns and rows
Use repeated subtraction to solve 20 ÷ 5.
20 − 5 − 5 − 5 − 5 = 0 → 4
What is the answer to a division problem called?
Quotient
What is the answer to a multiplication problem called?
Product
Which number does NOT belong in the fact family? 6, 9, 54, 63
54
An array has 32 objects arranged in 4 equal rows. How many objects are in each row?
8
Start at 24 and repeatedly subtract 6. How many times can you subtract 6 before reaching 0?
4 times
Write a division sentence using 3 numbers. Identify the divisor, dividend, and the quotient.
Example:
12/3=4
12 is the dividend
3 is the divisor
4 is the quotient
Write a multiplication sentence with 3 numbers. Identify the factors and the product.
Example: 4 x 3=12
4 and 3 are the factors
12 is the product
Complete the fact family: 7 × 8 = 56, 8 × 7 = 56, 56 ÷ 7 = ___, 56 ÷ 8 = ___
8,7
An array has 5 rows and 6 columns. What COMPLETE multiplication equation represents the array?
5x6=30
45 − 9 − 9 − 9 − 9 − 9 = 0. What multiplication AND division facts does this represent?
5 × 9 = 45 and 45 ÷ 9 = 5
There are 35 cookies shared equally among 5 students. How many cookies does each student get? Make sure to include units.
7 cookies
A classroom has 7 tables with 6 students at each table. How many students are there altogether?
42 students
Complete the fact family: ___ × 12 = 96 and 96 ÷ ___ = 12
An array represents 7 × 9. If you add one more row of 9, what new multiplication equation does the array represent?
8 x 9
Jack has 56 stickers. He gives away 8 stickers at a time. Use repeated subtraction to determine how many groups of 8 he can make.
7 groups
A teacher has 73 pencils and puts 9 pencils in each box. How many boxes does she need?
9 boxes
A movie theater has 8 rows with 24 seats in each row. How many seats are there?
192 seats
I am thinking of a fact family. My product is 72. One factor is 9. Write all four equations in the fact family.
8
8 x 7 =56
7x8=56
56/7=8
56/8=7
An array has 6 rows and 8 columns. You split it into two smaller arrays with 6 rows each. One array has 5 columns. How many columns does the other array have, and what multiplication equations show the split?
3 columns; 6 × 5 = 30 and 6 × 3 = 18, so 30 + 18 = 48
A number reaches 0 after subtracting 9 exactly 8 times. What was the starting number?
72
A farmer has 96 apples. He puts them into bags with 8 apples in each bag. He gives away 5 bags. How many bags does he have left?
7 bags (96 ÷ 8 = 12; 12 − 5 = 7)
What number is missing? ___ × 12 = 288