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Lesson 7 - Recording Two-Digit Subtraction

Use these interactive activities to encourage students to have fun on the Web while learning about recording two-digit subtraction. Students can try these activities on their own or in pairs.

Goals

Use a concrete model to subtract 2-digit numbers, with and without regrouping.

Record the subtraction process.

Instructions for Use

Subtraction Without Regrouping lets students use a concrete model to subtract 2-digit numbers without regrouping.

To use Subtraction Without Regrouping, click "OK" to subtract the ones column and write the ones in the ones column. Click "OK" to subtract the tens column and write the tens in the tens column. Click "OK" to try another question.

Subtraction Without Regrouping Exercise lets students use a concrete model to practice subtracting 2-digit numbers without regrouping.

To use Subtraction Without Regrouping Exercise, click the "Start" button. Subtract the ones column and input the answer in the text box. Subtract the tens column and input the answer in the text box. Click the "Next" button to try another question.

Subtraction With Regrouping lets students use a concrete model to subtract 2-digit numbers with regrouping.

To use Subtraction With Regrouping, click "OK" to regroup the tens into ones. Click "OK" to subtract the ones column. Click "OK" to subtract the tens column. Click "OK" to try another question.

Subtraction With Regrouping Exercise lets students use a concrete model to practice subtracting 2-digit numbers with regrouping.

To use Subtraction With Regrouping Exercise, click the "Start" button. Borrow 1 ten from the top tens. Write the regrouped tens above the tens column. Add one ten to the top ones column. Subtract the ones column and input the answer in the text box. Subtract the tens column and input the answer in the text box. Click the "Next" button to try another question.