1) List as many words as you can for each of these four symbols  a) b) c) d) 2) Complete the following addition problems E1/E2 a) 3 + 3 = b) 7 + 9 = c) 4 + 5 = d) 12 + 6 = e) 20 + 5 = f) 34 + 4 = 3) complete the following addition problems E3/L1 a) 345 + 432 = b) 286 + 123 c) 643 + 89 = d) 8956 + 4620 e) 7907 + 1209 = f) 5678 + 3788 = 4) Complete the following subtraction problems E1/E2 a) 9 - 3 = b) 4 - 2 = c) 9 - 4 = d) 23 - 10 = e) 15 - 5 = f) 20 - 4 = 5) Complete the following subtraction problems E3/L1 a) 48 - 34 = b) 75 - 23 = c) 54 - 23 = d) 672 - 341 =  e) 875 - 217 =  f) 784 - 123 = 6) Complete the multiplication problems E1/E2 a) 2 x 3 = b) 4 x 5 = c) 3 x 2 = d) 2 x 10 = e) 2 x 30 f) 5 x 5 = 7) Complete the multiplication problems E3/L1 a) 45 x 9 = b) 34 x 7 = c) 12 x 4 = d) 454 x 34 = e) 123 x 98 = f) 273 = 75 =

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