What does combine mean?, to add +, to subtract -, What does 'total' mean?, to subtract -, to add +, Sam has 20 toys and Lily has 10 toys. How many toys do they have in all?, They have 10 toys in all., They have 20 toys in all., They have 30 toys in all., There are 25 apples on a tree. 12 fall off. How many are left?, 25 - 12 = 13, 25 + 12 = 37, There are 50 toys in the toy box. 20 toys are for girls and the rest are for boys. How many toys are for boys?, 50 - 20 = 30, 50 + 20 = 70, Tom has 12 bananas and 25 strawberries. How much fruit does he have in all?, Action: combine, Action: take away, Andy has 30 bananas and he eats 2. How many bananas are left?, Action: combine, Action: take away, Andy has 30 bananas and he eats 2. How many bananas are left?, 30 - 2 = 28, 30 + 2 = 32, There are 30 books on the table. 5 books are for children and the rest are for babies. How many books are for babies?, 30 plus 5 equals 35, 30 minus 5 equals 25, Combine 5 and 15, 10, 20, 15, Combine 23 and 8, 31, 33, 15, What is 30 take away 10?, 20, 30, 40.

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