20200511 084054...c and f b and e 18. cube 4 problem-solving monday 12 edges 6 vertices 300,000 45...

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Page 1: 20200511 084054...C and F B and E 18. cube 4 Problem-solving Monday 12 edges 6 vertices 300,000 45 right 250 66 cube Ed Publishing New Wave Mental Maths . Title: 20200511_084054.jpg