【正文】
umber game: Who is quicker?(誰最先說出 ) Can you solve these problems? 你們會做下列問題嗎 ? two +nine = _________. three + nine = ________. six + seven = __________. eight + six = _________. seven + eight = __________. nine + seven = _________. ten + seven = _________. ten +eight = _______. eleven +eight = _____. ten + ten = _______. twenty +one=__________. sixteen + thirteen=___________. eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nieen twenty twentyone thirty one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nieen twenty thirty forty fifty sixty seventy eighty niy twentyone … twenty nine thirtyon