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You are probably familiar with using numbers to add, subtract, multiply, and divide in your language. These operations the same in English. In this article you will learn how to read the problems in English. There are four basic operations to do with numbers: addition (+), subtraction (-), multiplication (x), and division ( ).
We write addition problems with a plus sign: 4 + 3 = 7, and we say, Four plus three equals seven. We can also say, Four and three are seven. Seven is the result of four plus three. We call the result of addition the sum, so we can say, The sum of four and three is seven.
We write subtraction problems with minus sign: 4-3 = 1, and we say, Four minus three is one. We can also say, Three from four equals one. We call the result of a subtraction problem the difference, so we can say, The difference between four and three is one.
We write multiplication problems in different ways: 4 x 3 = 12 or 4.3 = 12 or 4*3 = 12 or (4) (3) = 12. We can read these like this: Four times three is twelve, or Four threes are twelve. We call the result of multiplication the product. We say, The product of four and three is twelve.
We write division problems in different ways, too: 6 3 = 2 or 6/3 = 2. We can say, Six divided by three is two, or Three into six equals two, Three goes into six two times. We call the result of division the quotient. Sometimes, does not divide evenly into another number. In this case there is a remainder. For example, seven divided by two equals three, with remainder of one.
Odd numbers (3, 5, 7, .) have a reminder of 1 when we divide them by 2. Two divides into even numbers (2, 4, 6 ) equally and does not have remainder.
Four basic operations in mathematics are addition, subtraction, multiplication, and division. We use these four operations every day when we go shopping, cook dinner, or work around the house.
EXERCISES
A. Write T if the sentence is true and F if the sentence is false
1. The sum of five and two is three. _________
2. The difference between eleven and seven is four . __________
3. The product of six and six is twelve. ____________
4. The quotient of six and six is one. ______________
5. Four times five is twelve. ______________
6. Three divided by two has a reminder of one. _____________
7. Nine is an even number. ____________
8. These symbols mean multiplication : * x _______________
9. This is a minus sign: +
10. There are only four basic operations in math
B. Answer the following questions
1. What are four basic operations in mathematics?
2. What do you call this sign? +
3. What is the result of 4 + 3?
4. What is the sum of 4 + 3?
5. Are the result and the sum the same?
6. What do you cal this sign?
7. What is the result of 4 3?
8. What do you call the result of subtraction?
9. What is the product?
10. What is the quotient?
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