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Robert Recorde, who designed the equals sign, introduced plus and minus in 1557. Brahmagupta was an Indian mathematician who invented the multiplication sign around the 19th century. Johann Rahn first used the division sign in his book Teutshe algebra in 1659.

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Q: Who invented the subtraction plus and equal and multiplication and division signs?
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How do you finish skill sets in first in math?

You use the numbers in the wheel and use multiplication. subtraction, addition, or division to equal the number that is outside of the wheel in the top right corner.

What is to separate into equal groups the opposite operation of multiplication?

Division. Division. Division. Division.

Why are subtraction addition multiplication division called reciprocal or inverse operations?

The inverse operation of addition would be subtraction. The inverse operation of subtraction would be addition. The inverse operation of multiplication is division and the inverse operation of division is multiplication. It is called the inverse operation because you are reversing the equation. If you add, subtract, multiply, or divide the same number on each side of the equation, then the equation would still be true. As long as you are doing the same thing on BOTH side of the equation. The reciprocal is used for dividing fractions. All you have to do for finding the reciprocal of a fraction is flip the fraction. Ex: The reciprocal of 1/4 is 4. The reciprocal of 5/8 is 8/5. You can check by multiplying the two fractions. It will equal to one if you did it right. I hope this helped a little bit.

Which will come first multiplication or division?

They have equal priority and are evaluated left to right. In fact, the US PEMDAS puts multiplication first whereas the UK BIDMAS puts division first. The only way to reconcile the two is equal priority.

What two numbers equal 81?

There is only one number that's equal to 81. That number is 81. There are many other sets of two or more numbers that you can manipulate with an arithmetic operation and produce 81 as the result. For example: Addition: 27 + 54 = 81 Subtraction: 175 - 94 = 81 Multiplication: 3 x 27 = 81 Division: 567 / 7 = 81 But none of those other numbers is "equal" to 81.

Related questions

Is multiplication before division in order of operations?

"Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction." Therefore multiplication and division are equal.

Does a positive and negative equal a positive?

Mathematically it can vary if addition/subtraction. If it's multiplication/division, then it's always negative.

How do you get three fives to equal six using only addition subtraction multiplication and division?

5 divided by 5, plus 5

How can you make 8 5 6 7 equal 13 using addition subtraction multiplication or division?


How can you make 9 7 1 8 equal 24 using addition subtraction multiplication or division?


How can you make 5 5 5 5 equal 2 using addition subtraction multiplication or division?

5/5 + 5/5 = 2.

How can you make 8 8 7 5 equal 24 using addition subtraction multiplication or division?


How do use addition subtraction multiplication and division using four 5 to equal 2?

(5 divided by 5) + (5 divided by 5) = 2

What is done first when you use the order of operations?

The operation is P.E.M.D.A.S., and each letter stands for an operation to use. P - parentheses, E - exponents, M - multiplication, D - division (multiplication and division are it doesn't matter which direction it is in. This is the same for addition and subtraction), A - addition, S - subtraction. I hope this helped :-)

How can you make 7 7 7 4 equal 24 using addition subtraction multiplication or division?

5748893 68549 48984 666477 78843 445

How is subtraction like division?

It's basically the same concept. Like subtraction is the opposite of addition, and division is the opposite of multiplication. Just the reverse. Kind of hard to explain.... ask your teacher!

Can you have subtraction in associative property of multiplication?

No, you cannot have subtraction in the associative property of multiplication because the associative property of multiplication is about multiplication. More to the point, if you're asking whether subtraction is associative, the answer is still no. (2 - 3) - 4 does not equal 2 - (3 - 4)