Subtraction with Base 10 Blocks

This video tutorial explains how to subtract whole numbers using base 10 blocks. It begins with an introduction to whole numbers and base 10 blocks, defining units, rods, and flats. The tutorial demonstrates subtraction through examples: 8 minus 5, 23 minus 11, and 15 minus 8, using online base 10 blocks. The process involves modeling numbers, removing units, and performing exchanges when necessary. The video aims to help viewers understand subtraction concepts and visualize the process using manipulatives.

What is a flat in base 10 blocks equivalent to?

• 1

• 10

• 100

• 1000

In subtraction, what is the term for the number you start with?

• Quotient

• Minuend

• Subtrahend

• Difference

How many units are used to model the number 8 in the first example?

• 5

• 3

• 10

• 8

What is the result of 8 minus 5 using base 10 blocks?

• 5

• 1

• 2

• 3

In the second example, how many rods are used to model the number 23?

• 1

• 2

• 3

• 4

What is the difference when subtracting 11 from 23 using base 10 blocks?

• 10

• 12

• 16

• 14

In the third example, what must be done when there are not enough units to subtract?

• Add more units

• Exchange a rod for units

• Use a flat

• Skip the subtraction

How many units are left after subtracting 8 from 15 in the third example?

• 5

• 6

• 8

• 7

What is the equivalent of one rod in units?

• 20 units

• 10 units

• 5 units

• 15 units

What is the final result of 15 minus 8 using base 10 blocks?

• 8

• 7

• 6

• 5