Addition worksheets for K-5 | K5 Learning Grade 1 addition worksheets Adding numbers up to 10 or 30 by counting pictured objects Adding with number lines (2 or 3 addends) Addition sentences & number lines Addition of single digit numbers (sums to 10, 20 ...) Number bonds (sums 8 to 10) Adding doubles and near doubles Missing addends (sums to 10, 20) Adding 3 numbers within 20