Subtraction & Difference( Week 27 Practice)
1. There are 18 kids in a sport camp. There are 11 bikes. How many more bikes will be needed in order to make every kid have a bike? 2. A mother hen is hatching a total of 10 eggs. 8 chicks get out of eggs after twenty days. How many more are expected? 3. 9 dogs sat around Steve and waited for him to feed them. After Steve fed 6 of them, how many dogs were left to be fed? 4. A flock of 19 birds are resting on 3 wires. 9 birds sit on the first wire. 4 birds sit on the third wire. How many birds sit on the middle wire? 5. Nancy's heartbeat is 70 per minute, and her dad's heartbeat is 75 per minute. How many beats per minute is Nancy's heart beat less than her dad's?