Question
Find the following values without a calculator. 
Give your answers in this manner. (Eg 122334, 45)
  1. 17 km + 15 km = ___ km
  2. 12 kg + 47 kg = ____ kg
  3. 45 ℓ - 37 ℓ = _____ ℓ
  4. 423 m - 123 m = _____ m 
2 m

Click button first when a symbol is required. X

Find the following values without a calculator. 
Give your answers in this manner. (Eg 122334, 45)
  1. 17 km + 15 km = ___ km
  2. 12 kg + 47 kg = ____ kg
  3. 45 ℓ - 37 ℓ = _____ ℓ
  4. 423 m - 123 m = _____ m