What is 10 less than 19 ?, What is 10 less than 50 ?, Count back in tens: 36 , 26, ⎽⎽, 36, 25, 16, 60 – 10 =, 37 – 10 =, Count back in tens: 25, 15 , ⎽⎽, 14, 35, 5, What is 10 less than 86 ?, 76, 85, 96, 70 – 10 =, 69, 60, 71, Count back in tens: 90, 80 , ⎽⎽, 60, 70, 81, 19 – 10 =, 9, 29, 18, What is 10 less than 61 ?, 50, 51, 60, Count back in tens: 43, 33 , ⎽⎽, 53, 32, 23, 78 – 10 =, 68, 77, 88, 90 – 10 =, 89, 80, 100, What is 10 less than 59 ?, 60, 58, 49, Rayan is 15 years old. His brother Roy is 10 years younger. How old is Roy?, 25, 5, 14

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