Subtraction Using Base Ten Blocks

What is the initial number of tens and ones in the number 82?

• 9 tens and 1 one

• 6 tens and 3 ones

• 7 tens and 12 ones

• 8 tens and 2 ones

Why do we need to exchange a ten block for ones during the subtraction process?

• To increase the number of tens

• To have enough ones to subtract

• To make the subtraction easier

• To reduce the number of tens

After exchanging a ten block, how many ones do we have before subtracting?

• 12 ones

• 4 ones

• 8 ones

• 10 ones

How many ones are left after subtracting 4 ones from 12 ones?

• 4 ones

• 8 ones

• 6 ones

• 10 ones

What is the final result of subtracting 34 from 82?

• 48

• 46

• 50

• 52