Write it in words
four hundred and twenty
Write it as an expanded number
400+20
Add 3
423
+ 25
445
Subtract 5
415
- 17
403
Next 3 even numbers
422,424,426
Double it
840
Last 4 odd numbers
419,417,415
Half of it
210
10% of it is
42
25% of it is
105
⅓ of it is
140
Multiply by 6
2520
x by 4
1680
Divide by 4
105
÷ by 6
70The easiest part was dividing 420.
The hardest part was multiplying 420 by 6.
I learnt how to multiply big numbers.
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