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Level Three > Number and Algebra

# Large Numbers Roll Over

Keywords:
Specific Learning Outcomes:

Find out how many ones, tens, hundreds and thousands are in all of a whole number.

Description of mathematics:

Number Framework Stage 6.

Required Resource Materials:
Play money (Material Master 4-9).
Activity:

Key Ideas

Check that the students understand that 10 one thousands equals one ten thousand not,  as is commonly thought, one million.

#### Using Materials

Problem: “Work out \$9,993 + \$9.”

Record \$9,993 + \$9 on the board or modelling book. With play money, model \$9,993  and \$9. Discuss why the 12 single dollars must be swapped for a ten-dollar note and  two single dollar notes. Discuss why nine tens plus the extra ten-dollar note makes 10  tens, which must be swapped for a one-hundred-dollar note. Continue these swaps  until there is a single ten-thousand-dollar note and two single dollars. Record the  answer of \$10,002 on the board or modelling book.

Problem: “Work out \$10,003 – \$4.”

Record \$10,003 – \$4 on the board or modelling book. Using play money, break the \$10,000 down to 10 one-thousand-dollar notes, break the one-thousand-dollar note down to 10 one-hundred-dollar notes, and so on until there are 13 single dollars.

Record the answer of \$9,999 on the board or modelling book.Examples: Word stories and recording for: \$9,988 + \$19   \$6 + \$52,994,   \$116 + \$9,884   \$40,003 – \$7   \$20,000 – \$100   \$999 + \$1,004   \$1,001– \$45   \$50,003 – \$5 ...

#### Using Number Properties

Examples: Word stories and recording for: 8 992 + 9   6 + 12 996   16 + 6 684 44 503 – 7   18 900 + 102   99 + 12 099   50 + 6 150   102 003 – 5 ...

## Saving Hundreds

Recall the number of tens and hundreds in 100s and 1000s.

Solve addition and subtraction problems by using place value partitioning.

## How Many Tens And Hundreds?

Recall the number of tens and hundreds in 100s and 1000s.

Solve addition and subtraction problems by using place value partitioning.

Find out how many ones, tens, hundreds and thousands are in all of a whole number.

## Space Zapper

This is a level 2 number link activity from the Figure It Out series. It relates to Stage 5 of the Number Framework.

## Jungle Land

This is a level 2 number link activity from the Figure It Out series. It relates to Stage 5 of the Number Framework.

## Checking Addition and Subtraction by Estimation

Solve addition and subtraction problems by using place value.