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Fill the blanks with these words; collect, expression, variable, like, unknown, equation A) 2x + 3x B) 2x + 3x = 25 A is an ______, B is an ______. In A x is a ____. In B x is an ____ that you can find the value of. You can ____ the terms in A because they are ____. A – Simplify C – Simplify 1) 2) 3) 4) 5) 6) 1) 2) 3) 4) 5) 6) 5x + 6x + 3x 8m + 2m – 3m 9y – 4y + 2y 4b + 5b – b 9p – 7p + 4p – 5p 4c + 3c – 11c B – Simplify 1) 2) 3) 4) 5) 6) 3xt 5xg b÷3 7÷w mxn pxq a x a = a2 2 x b = 2b a x b = ab 2÷b= 2 b 3 x 4d 5 x 2m 7f x 2 8s x 5 14c ÷ 2 20v ÷ 5 D – Simplify by collecting like terms 1) 10a + 8b + 3a 2) 2b + 6c + 4b 3) 8a + 4 + 2a + 3 4) 6h + 2 + h + 11 5) 7m + 2n + 3m + 4n 6) 5k + 2l – 2k + 3l Search Google for Khan Academy Origins of Algebra and watch the short video. Write down ten facts from the video relating to the origins of algebra. E – Simplify 1) 7n2 + 8p – p + 5n2 2) 8x2 – 3x – 3x2 3) -7b + 2a + 3b – 5a 4) -3g2 + 2g – 4g2 + 4g 5) 5c x 2d 6) 6h x 3i 7) 7z x 3z 8) 8s x 5s F – Which of these expressions simplify to give -3x – 4y a) 6x + 4y – 9x – 4y b) 12x + 3y – 9x – 7y c) 4x + 7y – 7x – 3y d) x + 2y – 4x – 6y