These are some possible answers.
They are inverses. For any numbers a, b, and c if: a + b = c then: a = c - b and b = c - a In words, addition is raising the value of a number by counting higher, (1, 2, 3, ...). Subtraction is the inverse (you count down 3, 2, 1, ...).
6 * 7 = 42 7 * 6 = 42 42 / 6 = 7 42 / 7 = 6
Well, isn't that just a happy little question! The fact families for 7, 9, and 63 are all related in a special way. You see, in this family, 7 x 9 = 63, 9 x 7 = 63, 63 ÷ 7 = 9, and 63 ÷ 9 = 7. Just like a family, each number has a special connection to the others.
Subtraction of integers is essentially addition of integers except the second integer is inverted. For example: 5 + 3 = 8 is a simple addition of integers. 5 - 3 = 5 is a simple subtraction of integers. It can be expressed by inverting the second value (the one right after the subration sign) and then switching the subtraction sign to an addition sign. So it would look like: 5 + (-3) = 5. Note that (-3) is the opposite of 3. So to do a more confusing subtraction problem like: 55 - (-5), we could rewrite this as: 55 + -(-5). From here it's easy to see that the two negatives cancel out. 55 + 5 = 60.
Well, darling, the fact family of 8, 5, and 40 consists of the numbers 8, 5, and their products and division results. So, in this case, the fact family would be 8 x 5 = 40, 5 x 8 = 40, 40 ÷ 8 = 5, and 40 ÷ 5 = 8. It's as simple as that, sugar.
The equation (48 - 42 - 6) can be expressed in terms of addition and subtraction relationships. The related equations are: (48 - 42 = 6) (48 - 6 = 42) (42 + 6 = 48) (42 - 6 = 36) (6 + 42 = 48) (6 = 48 - 42) (42 = 48 - 6) (48 = 42 + 6) These equations illustrate the connections between the numbers involved.
Addition and subtraction are reverse operations.
Addition and subtraction are inverse functions.
A fact family in mathematics consists of a group of related addition and subtraction or multiplication and division facts that use the same numbers. For example, with the numbers 2, 3, and 5, the fact family includes the addition equations 2 + 3 = 5 and 3 + 2 = 5, as well as the subtraction equations 5 - 2 = 3 and 5 - 3 = 2. Fact families help illustrate the relationships between numbers and enhance understanding of these basic operations.
A set of related addition-subtraction or multiplication-division sentences is a fact family.
The fact family for 89 and 72 consists of the numbers 89, 72, and their sum, which is 161. The related addition and subtraction equations are: 89 + 72 = 161 and 161 - 89 = 72, as well as 161 - 72 = 89. Thus, the fact family includes these four equations.
A fact family consists of a set of related addition and subtraction or multiplication and division equations that use the same numbers. For the number 47, a simple fact family involving addition and subtraction could be: 20 + 27 = 47, 27 + 20 = 47, 47 - 20 = 27, and 47 - 27 = 20. This illustrates how the numbers 20, 27, and 47 relate to each other through these basic operations.
Yes
The fact family for the equation 18.7 - 4.24 includes the related addition and subtraction equations. The subtraction equation is 18.7 - 4.24 = 14.46. The corresponding addition equation is 14.46 + 4.24 = 18.7. Therefore, the fact family consists of 18.7, 4.24, and 14.46.
A fact family for the number 3927 consists of the addition and subtraction equations that can be formed using it and other related numbers. For example, if we take 3927, we can create the following equations: 3927 + 0 = 3927 and 3927 - 0 = 3927. Similarly, if we include other numbers like 0, the family can expand but will still revolve around the number 3927 and its relationships with those chosen numbers.
they are inverse functions
Related facts that use the same numbers are called a fact family. A fact family includes both addition and subtraction facts using the same set of numbers.