7 x a =, 7a, 7a2, a + a + a =, 3a, a3, b x b =, 2b, b2, 7 x a x a =, 7a2, 2a = 7, 6 x 7 x h x c =, 67hc, 42hc, j x k =, jk, jk2, 3 ÷ h =, 3/h, 1.5h, h ÷ 3 =, 3h, h/3, 4 x 3 x r =, 12 x r, 12r, 5c x 5 =, 25c, c x 25, which shows 't squared', t2, t t, which shows '3 multiplied by r', r3, 3r

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