This engaging activity is designed to help students practice their addition skills by filling in number pairs that add up to specific target sums, starting from 10 and progressing all the way to 100. The activity gradually increases in difficulty, allowing students to strengthen their understanding of number relationships and patterns. For example:Sum of 10: 0+10, 1+9, 2+8, 3+7, 4+6, etc.Sum of 20: 0+20, 2+18, 4+16, 8+12, 10+10, etc.Sum of 30: 0+30, 3+27, 6+24, 9+21, 12+18, etc.Sum of 40: 0+40,