True or False
The steps for this correct:
3 - (5 - 4)
3 - 1
2
TRUE! IT IS CORRECT!
Problem: 8 + 12 ÷ 3
(Step 1) 8 + 4
(Step 2) 14
(Step 2) is Wrong! 8 + 4 = 12
What does the B in BEDMAS stand for?
Brackets (), [], {}
Solve this, ANSWER ONLY: 16+2-15
16+2-15 = 3
Sylvia bought 4 bananas for 50 cents each and 1 apple for 80 cents. Write the FULL BEDMAS expression.
option 1) 4 × 50 + 80
option 2) 4 x 50 + 1 x 80
The steps for this correct:
(9 + 18 - 3) ÷ 8
(27 - 3) ÷ 8
24 ÷ 8
3
TRUE! It is 3!
Problem: 6 + 3 × 2
(Step 1) 9 × 2
(Step 2) 18
Step 1 is Wrong! you need to multiply (x) before you add (+)
When solving an expression which operation should you do first, ADDITION (+) or MULTIPLICATION (x)?
Multiplication (x)
Solve this, SHOWING ALL STEPS:
30÷5-2
30÷5-2
v
6 - 2
v
4
10 girls are playing soccer, 6 boys come join them to play. Later on 3 boys stop playing to go home. Write the FULL BEDMAS EXPRESSION.
10 + 6 - 3
In this problem (23 - 8) x 2 we solve the brackets first, then the exponent, then the multiplication.
FALSE, there is no exponent!
Problem: (5 + 3) × 2 + 4
(Step 1) 8 × 2 + 4
(Step 2) 16 + 4
(Step 3) 20
There are no mistakes!
What is this type of math problem called? 42
Exponent
Solve this, SHOWING ALL STEPS:
(200+50)x(9÷3)
(200+50)x(9÷3)
v v
(250) x (3)
v
750
Myles bought 3 pants for 25$ each and paid with a 100$ bill. Write the FULL BEDMAS expression.
BONUS POINT OPPORTUNITY: FIND THE FINAL ANSWER!
100 - 3 × 25
BONUS = 25
100 - 3 × 25
v
100 - 75
v
25
The steps to solve this is INCORRECT:
(4 - 1 + 8 ÷ 8) x 5
(4 - 1 + 1) x 5
(4 - 2) x 5
2 x 5
10
TRUE! THE STEPS TO SOLVE IT IS INCORRECT! The answer is 20!
Problem: 8 + 12 ÷ 3 + 23
(Step 1) 8 + 12 ÷ 3 + 6
(Step 2) 8 + 4 + 6
(Step 3) 12 + 6
(Step 4) 18
(Step 1) is wrong! They solved the exponent wrong (23 = 2 x 2 x 2 = 8). 20 is the correct answer!
When you have a BEDMAS problem and are re-writing the equation what do you always need to do?
BONUS POINTS OPPORTUNITY: Why?
Bring down the rest of the problem?
BONUS POINT OPPORTUNITY: To not forget any sets we haven't solved yet
Solve this, ANSWER ONLY: (6 - 2)2 x 2 + 4 ÷ (3 + 1)
(6 - 2)2 x 2 + 4 ÷ (3 + 1)
v v
42 x 2 + 4 ÷ 4
v
16 x 2 + 4 ÷ 4
v
32 + 4 ÷ 4
v
32 + 1
v
33
Robert bought 2 burgers for $3.50 each and 3 medium French fries for $1.20 each. Write the FULL BEDMAS expression.
2 × 3.50 + 3 × 1.20
The answer for this problem is 8
9-6+8-2
BONUS POINT OPPORTUNITY: SHOW YOUR WORK TO PROVE IT IS TRUE OR FALSE
FALSE!
BONUS: Correct answer is 9
9 - 6 + 8 - 2
3 + 8 - 2
11 - 2
9
Problem: 2 x (1 + 3)2 + (5 - 1)
(Step 1) 2 x (4)2 + (5 - 1)
(Step 2) 2 x (4)2 + 4
(Step 3) 2 x 8 + 4
(Step 4) 16 + 4
(Step 5) 21
Step 3 AND Step 5 are Wrong! Step 3 exponent (42 = 4 x 4 =16) is wrong and Step 5 the addition (+) is wrong
When do I follow the left to right rule?
1. When starting a problem
2. When there is division and multiplication @ the same step
3. When there is addition and subtraction @ the same step
Solve this, SHOWING ALL STEPS:
(6+1)+7x32
(6+1)+7x32
v
7+7x32
v
7+7x9
v
7+63
v
70
The price of a shirt is 100 dollars. The store manager gives a discount of 50 dollars. A man and his brother bought 4 shirts and then share the cost with his brother. Write the FULL BEDMAS expression.
(100 - 50) × 4 ÷ 2