Simplify the following numerical expression:

$2880÷48+160-200$

Simplify the following numerical expressions:

$128-4\times 21÷3+1250$

Simplify the following numerical expression:

$950-125\times 0+625÷25-5\times 5$

A boy has as many sisters as brothers, and his sisters have half as many sisters as brothers. Find the total number of boys and girls in family.

Simplify:$15÷5+16-6$

Simplify: $10÷2-5+6+2\times 5$

Simplify the following numerals expression:

$51\times 5÷5-7+9$

Simplify the following numerals expression:

$80\times 10÷4+50-7$

Simplify the following numerical expression:

$5 \mathrm{of} 6÷10+6-8$