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Easy Math
GCF
Mix 1
Mix 2
Mix 3
100

Which is greater than 4?

(a) 5,

(b) -5,

(c) -1/2,

(d) -25.

5 greater than 4.

Answer: (a)

100

Find the greatest common factor of 12 and 16.

12 = 2× 2 × 3
16 = 2 × 2 × 2 × 2
GCF of 12 and 16 = 2 × 2 = 4

100

Simplify: (4 – 5) – (13 – 18 + 2).

(a) -1,

(b) –2,

(c) 1,

(d) 2.

(4 – 5) – (13 – 18 + 2).

= -1-(13+2-18).

= -1-(15-18).

= -1-(-3).

= -1+3.

= 2.

Answer: (d)

100

8.563 + 4.8292 = ?

13.3922

100

Little John had $8.50. He spent $1.25 on sweets and gave to his two friends $1.20 each. How much money was left?

$4.85

200

Which is the smallest?

(a) -1,

(b) -1/2,

(c) 0,

(d) 3.

The smallest number is -1.

Answer: (a)

200

Find the greatest common factor of 36 and 42.

36 = 2 × 2 × 3 × 3
42 = 2 × 3 × 7
GCF of 36 and 42 = 2 × 3 = 6

6

200

Find k if 64 ÷ k = 4.

16

200

4a + 2a = ?

 6a

200

How else can you write 10⁴?

10 x 10 x 10 x 10 or 10,000

300

Say whether each of these numbers is a fraction, a decimal, or a whole number: ⅗, 18.2, 47.

⅗ is a fraction, 18.2 is a decimal, and 47 is another whole number.

300

Find the greatest common factor of 45, 60 and 75.

45 = 3 × 3 × 5
60 = 2 × 2 × 3 × 5
75 = 3 × 5 × 5
GCF of 45, 60 and 75 = 3 × 5 = 15

300

Combine terms: 12a + 26b -4b – 16a.

(a) 4a + 22b,

(b) -28a + 30b,

(c) -4a + 22b,

(d) 28a + 30b.

12a + 26b -4b – 16a.

= 12a – 16a + 26b – 4b.

= -4a + 22b.

Answer: (c)

300

Round 131,294 to the nearest hundred.

131,300

300

Follow the pattern. What is the trend or the next numbers?

3 , 8 , 13 , 18 , 23 , ___ , ____

  1. 28 , 33
  2. 27 , 32
  3. 28 , 32
  4. 27 , 33
  1. A. 28, 33
400

Which number is larger: -2 or -5?

-2

400

Find  the greatest common factor of 6 8 and 12.

2

400

Find the missing numbers.

100 , 98 , 96 , ___ , ___ , 90 , 88 , ...

  1. 95 , 94
  2. 97 , 98
  3. 94 , 92
  4. 92 , 91

C. 94 and 94

400

 7/12 + 2/5 = ?

 59/60

400

Add.

125.5 + 45.32 =

170.82

500

What is |-26|?

(a) -26,

(b) 26,

(c) 0,

(d) 1

|-26|

= 26.

Answer: (b)

500

Find the greatest common factor of 24, 40 and 60.

4

500

Divide.

1.92 ÷ 3 = ?

 0.64

1.92 is a whole number: 192 with two decimal places. Then divide 192 by 3 to get 64. Now put the two decimal places back in to get a final answer of 0.64.

500

Convert to a decimal.

12/100 

0.12

500

Subtract.

Linda cut 12.65 cm from a stick that was 15.5 cm long. How long is the stick now?


2.85 cm