Weekly Number challenge

Today’s Number:

407

Write it in words

four hundred and seven

Write it as an expanded number

400+7

Add 3

410

Add 20

427

Subtract 5

402

Double it

814

Half of it

203.5                                    

Multiply by 3

1,221

The easiest part was

expanded number

The hardest part was

multiply by 3

I need to work on

speed