Math 047J (Basic Multiply & Divide problems)
0 x 1
= 0
1 • 1 • 1 • 0
= 0 Any number(s) multiplied by zero results in zero is a product.
What is the product of zero and 20?
= 0 Product means the result of multipying, but anything times zero is zero.
1 • 1 • 1 • 1
= 1 Anything times one equals the original number; no matter how many times we multiply by one...
How many times would 19 "go into" 23?
= 1 (with a remainder of 4) By "go into" we mean division.
60 ÷ 6
= 10
10 • 10
= 100
100 ÷ 1
= 100 Any number divided by 1 equals the original number.
4 ∗ 5 ∗ 5
= 100 Multiply in any order. For example 5(5) = 25. 25 x 4 = 100.
60 ÷ 5
= 12
12 • 10
= 120
What is 12 x 12?
= 144
What is the product of five and three?
= 15 Product is the result of multiplication.
(2)(2)(2)(2)
= 16
9(2)
= 18
19(1)
= 19
12 ÷ 6
= 2
18/9
= 2
20 x 10
= 200 Think of it as 20 x 1 = 20, but now write another zero at the end.
2000 ÷ 1
= 2000
3 • 7
= 21
8(3)
= 24
What is the product of 4 and 6?
= 24 Product is the result of multiplying numbers.
(5)(5)
= 25
13(2)
= 26
Compute: (3)(3)(3)
= 27
2 x 14
= 28
7 x 2 x 2
= 28 Multiply in any order... for example, 2 x 2 = 4. Then 4 x 7 would be 28.
15 ÷ 5
= 3
What is 6 x 5?
= 30
(2)(3)(5)
= 30 Multiply 2 x 3 = 6. Then 6 x 5 = 30. (Or you may use a different sequence with the same result).
What is 15 x 2?
= 30 Think of it as 15 + 15.
(4)(2)(4)
= 32 Multiply in any order... 4 x 2 =8, then multiply 8 x 4 = 32
7 • 5 • 1
= 35 Multiply in any sequence to get the same answer.
What is the product of 13 and 3?
= 39 Product means the result of multiplication.
48 ÷ 12
= 4
What is the quotient of 16 and 4?
= 4 Quotient is the result of dividing numbers.
What is the quotient of 28 and 7?
= 4. Quotient is the answer to a division problem.
5 x 8
= 40
5 • 4 • 2
= 40 Because 5(4) = 20, but then 20 x 2 = 40... but you can also solve in other sequences.
3 • 2 x 7
= 42 Multiply in any sequence. The different multiplication symbols do not change what we're doing; multiply all of it.
(12)(4)
= 48
6 • 8
= 48
7 x 7
= 49
45 divided by what would equal 9?
= 5
55 ÷ 11
= 5
(9)(2) • (3)
= 54 Multiply in any sequence. The different multiplication symbols do not change what we're doing; multiply all of it.
Seven times eight
= 56
18 divided by 3
= 6
6 times what would equal 36?
= 6
How many 8's are inside 48?
= 6 This is another way of asking what is 48 divided by 8?
7 • 9
= 63
(8)(8)
= 64
6 x 11
= 66
56 ÷ 8
= 7
77/11
= 7
42/6
= 7 This is just another way of expressing a division problem, but it means the same as 42 ÷ 7
100(7)
= 700 Think of it as 7 x 1, with two zeroes placed at the end of the product.
12 • 6
= 72
(9)(8)
= 72 Remember that when numbers in parentheses are side-by-side (with NO other symbol in between) we multiply!
24 ÷ 3
= 8
64/8
= 8 This means 64 divided by 8.
20(4)
= 80 Multiply 4 x 2 (ignore the zero momentarily) = 8. Now put the zero back in the ones column... = 80.
12 x 7
= 84
27 ÷ 3
= 9
63 ÷ 7
= 9
72 ÷ 8
= 9
90 ÷ 10
= 9
What would you multiply by 8 to make 72?
= 9
How much would you get if you split 54 into six equal sets?
= 9 This is another way of asking 54 ÷ 6
36/4
= 9 This means 36 divided by 4
(11)(9)
= 99
What is the quotient of 36 and 0?
= undefined Cannot divide by zero.
17 ÷ 0
= undefined You cannot ever divide by zero.
0 ÷ 17
= zero Zero divided by anything (except zero) = zero.
