Level 2
Find the following values without a calculator.
  1. 15 x 4 + 8 x 15 = _____ x 15
  2. 12 x 3 + 3 x 4 + 3 x 1 = _____ x 3 + 2 x 3
  3. 16 x 5 - 4 x 16 = _____ x 16
  4. 10 x 8 + 5 x 8 - 2 x 8 = 15 x 8 - 8 x _____
3 m
Level 2
Find the following values without a calculator.
  1. 310 + 410 + 210 = _____ x 110 + 210
  2. 811 - 311 - 211 = 711 - _____ x 111
  3. 56 + 36 - 16 = _____ x 16 - 16
  4. 1 17 + 27 = 17 x _____ + 17
3 m