Add Double-Digit Numbers with Regrouping 2-26
Transition to 2-digit numbers with more ones. What's 59+37? Since 50+30 = 80, 9+7 = 16, and 80+16 = 96, 59+37 = 96. Use a Make 10 strategy to add 9+7. Add 80+16 by breaking 16 into 10 and 6 and adding 80 + 10 + 6. Regrouping problems require stronger pre-requisite skills, but not more steps.
