solve this: 56 - 42
fourteen
solve this: 47 - 30
seventeen
what number is it?
eighty
what number is it?
fifty
what number is it?
a hundred
solve this: 40 - 28
twelve
what number is it?
seventy
what number is it?
forty
what number is it?
ninety
what number is it?
sixty
solve this: 30 - 14
sixteen
solve this: 23 - 10
thirteen
what number is it?
thirty
solve this: 5 + 29
thirty four
solve this: 99 - 81
eighteen
what number is it?
twenty
solve this: 84 - 69
fifteen
solve this: 50 - 39
eleven