Question
Find the following values without a calculator. 
Give your answers in this manner. (Eg 122334, 45)
  1. 15 km + 38 km = ___ km
  2. 47 kg + 57 kg = ____ kg
  3. 57 ℓ - 23 ℓ = _____ ℓ
  4. 437 m - 189 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. 15 km + 38 km = ___ km
  2. 47 kg + 57 kg = ____ kg
  3. 57 ℓ - 23 ℓ = _____ ℓ
  4. 437 m - 189 m = _____ m