Find the number if $1%$1% of the number is $20$20.

Find the number if $2%$2% of the number is $8$8.

Find the number if $10%$10% of the number is $5$5.

Find the number if $20%$20% of the number is $10$10.

Find fractions, decimals, and percentages of amounts expressed as whole numbers, simple fractions, and decimals