Nelson EducationSchoolMathematics 2  
Surf for More MathLesson 3  Recording TwoDigit AdditionUse these interactive activities to encourage students to have fun on the Web while learning about recording twodigit addition. Students can try these activities on their own or in pairs.
GoalsUse a concrete model to add 2digit numbers, with and without regrouping. Record the addition process.
Instructions for UseAdding TwoDigit Numbers Without Regrouping lets students use a concrete model to add 2digit numbers without regrouping. To use Adding TwoDigit Numbers Without Regrouping, click "OK" to add the ones column. Click "OK" to write the ones in the ones column. Click "OK" to add the tens column. Click "OK" to write the tens in the tens column. Click the "Next" button to try another question.
Adding TwoDigit Numbers Without Regrouping Exercise lets students use a concrete model to practice adding 2digit numbers without regrouping. To use Adding TwoDigit Numbers Without Regrouping Exercise, click the "Start" button. Add the ones column and input the answer in the text box. Add the tens column and input the answer in the text box. Click the "Next" button to try another question.
Adding TwoDigit Numbers With Regrouping lets students use a concrete model to add 2digit numbers with regrouping. To use Adding TwoDigit Numbers With Regrouping, click "OK" to add the ones column. Click "OK" to write the ones in the ones column. Click "OK" to add the tens column. Click "OK" to write the tens in the tens column. Click "OK" to regroup the ones. Click "OK" to write the ones in the ones column. Click "OK" to write the extra tens in the tens column and add the extra tens to the column. Click the "Next" button to try another question.
Adding TwoDigit Numbers With Regrouping Exercise lets students use a concrete model to practice adding 2digit numbers with regrouping. To use Adding TwoDigit Numbers With Regrouping Exercise, click the "Start" button. Add the ones column and input the answer in the text box. Regroup the numbers into tens and ones. Enter the ones in the ones column, and input the extra tens above the equation. Add the tens column and input the answer in the text box. Add the extra tens. Enter the tens in the tens column. Click the "Next" button to try another question. 
