Question
Find the following values without a calculator. 
Give your answers in this manner. (Eg 122334, 45)
  1. 15 km + 23 km = ___ km
  2. 89 kg + 78 kg = ____ kg
  3. 89 ℓ - 13 ℓ = _____ ℓ
  4. 589 m - 138 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 + 23 km = ___ km
  2. 89 kg + 78 kg = ____ kg
  3. 89 ℓ - 13 ℓ = _____ ℓ
  4. 589 m - 138 m = _____ m