Module Three Flashcards Preview

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Flashcards in Module Three Deck (20)
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1
Q

8x + 3x = ?

A

11x

2
Q

6m + 3m - 4m = ?

A

5m

3
Q

7a + a = ?

A

8a

When doing questions like this, consider the “a” by itself as “1a”.

4
Q

m + m + m = ?

A

3m

Think of the question as being “1m + 1m + 1m”.

5
Q

3a² + 5a² = ?

A

8a²

6
Q

4ab + 1ab - 2ab = ?

A

3ab

Remember: “ab” on its own equals “1ab”.

7
Q

5a + 3b - 2a + b = ?

A

3a + 4b

Think: collect like terms.
5a - 2a = 3a
+ 3b + b = 4b

= 3a + 4b

8
Q

6a² - 3a - 2a² = ?

Think: collect like terms.

A

4a² - 3a

6a² - 2a² = 4a²
- 3a
= 4a² - 3a

9
Q

3pq + 2qp = ?

Remember:
5 X 2 = 10. 2 X 5 = 10.
The same applies to qp and pq.

A

5pq

10
Q

10a - 3x + 7 + x - 4a + 5 = ?

Think: collect like terms.

A

6a - 2x + 12

10a - 4a = 6a
- 3x + 1x = - 2x
+ 7 + 5 = + 12
= 6a - 2x + 12

11
Q

8 X 3a = ?

Remember: numbers FIRST, then letters.

A

24a

8 X 3 = 24
24 X a = 24a

12
Q

8a X 2b = ?

Remember: numbers FIRST, then letters.

A

16ab

8 X 2 = 16
16 X a X b = 16ab

13
Q

5a X bc = ?

A

5abc

14
Q

(-5p) X 3q

Remember: numbers FIRST, then letters.

A

-15pq

  • 5 X 3 = -15
  • 15 X p X q = -15pq
15
Q

7a X 3a = ?

A

21a²

7 x 3 = 21
a x a = a²
= 21a²

16
Q

(-6a) x (-8ab) = ?

A

48a²b

-6 x -8 = 48
a x a = a²
x b = 48a²b

17
Q

2ab x (-3a) x 5bc = ?

A

30a²b²c

2 x -3 x 5 = -30
a x a = a²
b x b = b²
x c = -30a²b²c

18
Q

What is NEGATIVE ÷ POSITIVE?

A

Negative. Always negative.

19
Q

What is NEGATIVE ÷ NEGATIVE?

A

Positive. Always positive.

20
Q

What is NEGATIVE × NEGATIVE?

A

Positive. Always positive.