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Spec: M-Num · No calculator · ~150s
Letters only — the answer key is hidden. Work it out, then check the solution below.
No written hint yet — check the trope: ratio-division. Name the trap first, work the stem by hand, then open the solution below.
Same topic · same level
TMUA-P1-MNUM-001
What is the highest common factor (HCF) of 36 and 54?
Number
Same trap: ratio-division
TMUA-P1-MNUM-025
Write the ratio 15:25 in its simplest form.
Number
Step up a level
TMUA-P1-MNUM-005
What is the lowest common multiple (LCM) of 12, 18 and 20?
Number