What is 225 divided by 5 in chunking method?

Answer 1

45

Answer 2

It is: 45

-----------------------------------

To use the chunking method, you start off by removing what you can:

removing chunks of 10 lots of 5 = 10 × 5 = 50

1 chunk: 225 - 50 = 175

1 chunk 175 - 50 = 125

2 chunks 125 - 2 × 50 - 125 - 100 = 25

25 is less than 50 so cannot remove any more chunks of this size.

→ removed 4 chunks of 10 lots of 5

= removed 4 × 10 chunks of 5.

removing chunks of 5

1 chunk: 25 - 5 = 20

1 chunk: 20 - 5 = 15

1 chunk: 15 - 5 = 10

2 chunks: 10 - 2 × 5 = 10 - 10 = 0

reached 0, so we have completed the division.

→ removed 5 chunks of 5.

→ removed 4 × 10 + 5 chunks of 5 in total

= removed 45 chunks of 5

→ 225 ÷ 5 = 45

If you can removed more than 1 chunk at a time you will save time, eg you may know that 4 × 5 = 20

so your chunks would be:

Removing chunks of 10 lots of 5:

4 chunks: 225 - 4 × 50 = 225 - 200 = 25

Removing chunks of 5:

4 chunks: 25 - 4 × 5 = 25 - 20 = 5

1 chunk: 5 - 5 = 0

→ total chunks removed = 4 × 10 + 4 + 1 = 45 (as before).