Arithmetic (LCM & HCF)
1 / 31
1) Find the highest common factor (HCF) of 21 and 28.
2 / 31
2) Find the highest common factor (HCF) of 28 and 35.
3 / 31
3) Find the highest common factor (HCF) of 15 and 20.
4 / 31
4) Find the highest common factor (HCF) of 18 and 27.
5 / 31
5) Find the highest common factor (HCF) of 35 and 49.
6 / 31
6) Find the highest common factor (HCF) of 42 and 63.
7 / 31
7) Find the least common multiple (LCM) of 7 and 14.
8 / 31
8) Find the least common multiple (LCM) of 21 and 28.
9 / 31
9) Find the least common multiple (LCM) of 10 and 15.
10 / 31
10) Find the least common multiple (LCM) of 6 and 9.
11 / 31
11) Find the least common multiple (LCM) of 12 and 15.
12 / 31
12) Find the highest common factor (HCF) of 30 and 45.
13 / 31
13) Find the least common multiple (LCM) of 16 and 20.
14 / 31
14) Find the highest common factor (HCF) of 16 and 32.
15 / 31
15) Find the least common multiple (LCM) of 4 and 9.
16 / 31
16) Find the least common multiple (LCM) of 14 and 21.
17 / 31
17) Find the highest common factor (HCF) of 45 and 60.
18 / 31
18) Find the least common multiple (LCM) of 6 and 8.
19 / 31
19) Find the least common multiple (LCM) of 2 and 5.
20 / 31
20) Find the highest common factor (HCF) of 42 and 56.
21 / 31
21) Find the least common multiple (LCM) of 5 and 7.
22 / 31
22) Find the highest common factor (HCF) of 22 and 44.
23 / 31
23) Find the highest common factor (HCF) of 48 and 72.
24 / 31
24) Find the highest common factor (HCF) of 36 and 48.
25 / 31
25) Find the least common multiple (LCM) of 3 and 12.
26 / 31
26) Find the least common multiple (LCM) of 8 and 10.
27 / 31
27) Find the highest common factor (HCF) of 24 and 36.
28 / 31
28) Find the highest common factor (HCF) of 54 and 81.
29 / 31
29) Find the least common multiple (LCM) of 12 and 18.
30 / 31
30) Find the least common multiple (LCM) of 9 and 15.
31 / 31
31) Find the least common multiple (LCM) of 25 and 35.
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