Lesson 1-1 Part 1

Do not use 'x' for multiplication. Either use the horseshoe looking shape above and find the center dot or use ALT and 250 at the same time on your keyboard.Use ' to denote a fraction. 1 ÷ 2 = 1 numerical expression 2 · 12 d · 12 6 numerical expression variable expression numerical expression 19 + m n 5 + a x - 2 2 10p or 10 · p k - 6 4 · 7 7 · 5 100