Addition
17+11=28
Addition combines two quantities into a total. Here you add 17 and 11 by summing ones and tens, which gives 28. 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 11 by summing ones and tens, which gives 28. Line the numbers up by place value and carry when a column exceeds nine.