Understanding Base 10 and Place Value

What is the main reason we use base 10 in our number system?

• Because it is based on the number 1000

• Because it is based on the number 5

• Because it is based on the number 10

• Because it is based on the number 100

When you have 13 apples, how are they represented in terms of place value?

• 1 hundred and 3 tens

• 3 hundreds and 1 ten

• 3 tens and 1 one

• 1 ten and 3 ones

What does a single base 10 block represent?

• A hundred

• A ten

• A one

• A thousand

How many tens blocks are needed to form a hundreds block?

• 15

• 5

• 20

• 10

To make the number 335 using base 10 blocks, how many hundreds blocks are needed?

• 1

• 4

• 2

• 3

If you have 6 ones blocks, 8 tens blocks, and 2 hundreds blocks, what number do they represent?

• 862

• 826

• 268

• 286

What happens when you have 10 ones blocks?

• They form a new hundreds block

• They form a new tens block

• They remain as ones blocks

• They form a new thousands block

What is the value of 10 groups of a hundred thousand?

• A million

• Ten thousand

• A hundred

• A thousand

Why is regrouping necessary in base 10?

• To make numbers look smaller

• To ensure each place holds only one digit

• To make numbers look bigger

• To simplify calculations

What is the value of 10 tens blocks?

• A hundred

• Ten

• One

• A thousand