BEDMAS QUESTION

Bedmas question:

(10x40) /2+15-20x2=

Brackets? -Yes .

400 /2+15-20x2

Exponents? -No.

Division or Multiplication? -Yes. Division

200+15-20x2

Division or Multiplication? -Yes. Multiplication

200+15-40

Addition or Subtraction? -Yes. Addition

215-40

Addition or Subtraction? -Yes. Subtraction

ANSWER IS: 175.

Mr. Wilson's math answer question

Mr. Wilson's math answer question

My answer:

It's based on the grading range.

for example, the letter grades would fall into these grade ranges:

A: 100% to 90%

B: 89% to 80%

C: 79% to 70%

D: 69% to 60%

F: 59% and lower.

Therefore, since the student got 11 out of 14 correct, their grade would be 78.5%. Which is a C grade.

MATH QUESTION

Definition

Numerical Coefficient- a number that multiplies the variable.

eg.) 2t

Deinitions

Variable- a letter that represents an unknown number.

eg.) x, a, n, tx2= ...

expression- any single number or variable, or combination of operations involving numbers and variables.

eg.) 5, n, 8+, x+, 2y-7

Value- a known or calculated amount.

Constant- a number that doesn't change and it increases or decreases the value of an expression.

Divisibility Rules

Divisibility Rules:

1. ALL WHOLE NUMBERS ARE DIVISIBLE BY 1.

2. ALL EVEN WHOLE NUMBERS ARE DIVISIBLE BY 2. (0, 2, 4, 6, 8)

3. THE SUM OF THE DIGITS IS DIVISIBLE BY 3.

4. THE DIGIT CAN BE MULTIPLIES BY 2 TWICE.

5. THE LAST DIGIT ENDS IN 5 OR 0.

6. THE NUMBER IS DIVISIBLE BY 2 AND 3.

8. THE DIGIT CAN BE MULTIPLIED BY 2 THRICE.

9. THE DIGITS ARE DIVISIBLE BY 9.

10. THE LAST DIGIT IS 0.

Multiples

MULTIPLES: the product of any given number and natural number. Like: 1,2,3.

eg.) Some multiples of 3 are: 3,6,9,12,18 ....

As you can see, multiples is just skip counting.

Divisibility Rule for 5

Rule for 5

The last digit is 0 or 5.

For Example:

46793285 . <--- The last digit ends in 5. So it's divisible by 5.

79453860 . <--- The last digit ends in 0. So it's divisible by 5.

78293546 . <--- The last digit doesn't end in 0 or 5. It's not divisible by 5.

Chapter Four Review Test: Page 146.

4. Use a ratio table to show your answer.

A) Find 10% of 25.

The answer for this question is: 2.5

Order Of Operations

Today's BEDMAS question is: 4x3+12÷2= ...

STEP 1: Check if there is any brackets. -there's none.

STEP 2: Check if there is any exponents. -there's none.

STEP 3: Check if there is any division or multiplication. (left to right) -there's multiplication.

Now it should look like this. 4x3+12÷2=

12+12÷2=. .

STEP 4: Now you do division since there is no brackets, exponents, and multiplication.

Now it should look like this. 4x3+12÷2=

12+12÷2=

12+6= .

STEP 5: Check if there is any addition or subtraction. (left to right) -there's addition.

Now it should look like this. 4x3+12÷2= 18

12+12÷2= 18

12+6= 18

18= 18.

Here's another picture of it.

Here's a video that might help you a little more with BEDMAS.

http://www.youtube.com/watch?v=oyGG4caBG4k&feature=player_embedded