GCF
LCM
PEMDAS
Brackets
Challenge
100

What is the GCF of 44 and 22

22

100

What is the LCM of 6 and 2

6

100

4 x 5 + 6 ÷ 2

23

100

[8 x (23 - 19)] ÷ 2

16

100

What is the gcf of 120 and 180

60

200

What is the GCF of 30 and 18

6

200

what is the lcm of 12 and 18

36

200

18 ÷ (6 ÷ 3) + 5

14

200

6 + [(21 -17) x 12]

54

200

A school has 140 notebooks, 196 pencils, and 252 erasers to be distributed equally among the maximum possible number of students, such that each student gets the same number of each item and no item is left over.

How many students are there (GCF)?

28

300

What is the GCF of 6 and 35

1

300

what is the lcm of 15, 20, 25

100

300

9 x 5 - 4 + 14

55

300

48 - [(17 - 9) - 5] x 4

36

300

3 x {12 - [2 x (12 - 3 - 2 x 3)] + 4}

30

400

What is the GCF of 14 and 55

1

400

what is the lcm of 12, 8, and 18

72

400

9 x (5 + 3) 

72

400

5 x [23 - (18 -4)]

45

400

What is the GCF of 165, 195, and 285

15

500

What is the GCF of 56, 28, and 14

14

500

what is the lcm of 16, 24, 36

144

500

12 + 8 x 4 - 4 x (3 ÷ 3) 

40

500

70 - [(23 -12) x 5] ÷ (14 - 9) 

59

500

20 x {6 - [(18 + 12 + 6) ÷ 9]}

40

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