Resolva os problemas, e depois escreva o resulto em extenso.
a) Ten x three ═ __________________________
b) Sixty + fifteen ═________________________
c) Twelve x two ═________________________
d) Thirty x three ═________________________
e) Thirty - one x two ═__________________
f) Thirty - one x two ═__________________
g) Ninety + four ═ _______________________
h) Fifteen - thirty ═ _____________________
i) Fifty - Thirty ═________________________
j) Forty × twelve ═_______________________
k) Eight x eight= ________________________