Addition
17+39=56
Addition combines two quantities into a total. Here you add 17 and 39 by summing ones and tens, which gives 56. Line the numbers up by place value and carry when a column exceeds nine.
Addition
Addition combines two quantities into a total. Here you add 17 and 39 by summing ones and tens, which gives 56. Line the numbers up by place value and carry when a column exceeds nine.