Regrouping with Subtraction Quiz

What is the first step in solving a subtraction problem using regrouping?

• Start subtracting from the tens place

• Add the numbers together

• Line up the numbers correctly

• Subtract the larger number from the smaller number

Why do we need to regroup when subtracting 17 from 45?

• Because subtraction always requires regrouping

• Because 17 is an odd number

• Because there are not enough ones to subtract

• Because 45 is a larger number

How many ones blocks do we have after regrouping a tens block?

• 20

• 15

• 10

• 5

After regrouping, how many tens blocks are left?

• 4

• 3

• 2

• 1

What is the final number of students left on the bus after subtraction?

• 45

• 10

• 28

• 17