Cardinal Numbers

Choose the correct answer. Twenty plus sixty is … .

Choose the correct answer. Twenty plus thirty is … .

Choose the correct answer. Five plus five is … .

Choose the correct answer. Forty plus fifty is … .

Choose the correct answer. Thirty plus thirty is … .

Choose the correct answer. Fifteen plus fifteen is … .

Choose the correct answer. Ten plus ten is … .

Choose the correct answer. Twenty plus twenty is … .

Choose the correct answer. Seventy plus thirty is … .

Choose the correct answer. Forty plus thirty is … .