Basics Of Pemdas
What does the P in PEMDAS stand for?
P = Parentheses. Parentheses go first
(4 + 3) × 2
P goes first: 4 + 3 = 7. Then 7 × 2 = 14.
Solve: 2² + 3
E goes first: 2² = 4. Then 4 + 3 = 7.
8 + 4 × 2
M goes first: 4 × 2 = 8. Then 8 + 8 = 16.
9 + 6 - 4
A/S go left to right: 9 + 6 = 15. Then 15 - 4 = 11.
What does the E in PEMDAS stand for?
E = Exponents. Exponents come after parentheses.
20 - (6 + 4)
P goes first: 6 + 4 = 10. Then 20 - 10 = 10.
Solve: 5 + 3²
E goes first: 3² = 9. Then 5 + 9 = 14.
Solve: 18 ÷ 3 + 5
D goes first: 18 ÷ 3 = 6. Then 6 + 5 = 11.
Solve: 20 - 5 + 3
S/A go left to right: 20 - 5 = 15. Then 15 + 3 = 18.
In 6 + 2 × 3, which part should you solve first?
Solve 2 × 3 first because M = Multiplication comes before addition. The answer is 12.
5 × (8 - 3) + 2
P goes first: 8 - 3 = 5. Then 5 × 5 = 25. Then 25 + 2 = 27.
Solve: 4 × 2³
E goes first: 2³ = 8. Then 4 × 8 = 32.
10 + 12 ÷ 4 × 2
D/M go left to right: 12 ÷ 4 = 3. Then 3 × 2 = 6. Then 10 + 6 = 16.
Solve: 3 + (4 × 5) - 6
P goes first: Inside parentheses, 4 × 5 = 20. Then 3 + 20 - 6 = 17.
True or False: You always add before you multiply.
False. Multiplication comes before addition in PEMDAS.
(9 + 3) ÷ 3 + 4
Answer: P goes first: 9 + 3 = 12. Then 12 ÷ 3 = 4. Then 4 + 4 = 8.
Solve: (2 + 3)²
P goes first: 2 + 3 = 5. Then E: 5² = 25.
7 × 3 - 8 ÷ 2
M/D go first: 7 × 3 = 21 and 8 ÷ 2 = 4. Then 21 - 4 = 17.
Solve: (12 - 4) ÷ 2 + 3²
P goes first: 12 - 4 = 8. Then E: 3² = 9. Then 8 ÷ 2 = 4. Then 4 + 9 = 13.
What do you do if multiplication and division are both in the problem?
Do M/D from left to right, whichever comes first.
30 ÷ (2 + 3) + 7
P goes first: 2 + 3 = 5. Then 30 ÷ 5 = 6. Then 6 + 7 = 13.
6 + 2² × 3
E goes first: 2² = 4. Then M: 4 × 3 = 12. Then 6 + 12 = 18.
24 ÷ 3 × 2 + 6
D/M go left to right: 24 ÷ 3 = 8. Then 8 × 2 = 16. Then 16 + 6 = 22.
50 - [(6 + 4) × 3] ÷ 5
P goes first: 6 + 4 = 10. Then M: 10 × 3 = 30. Then D: 30 ÷ 5 = 6. Then S: 50 - 6 = 44.