Flying a plane is tricky, but zoologist Mark Vette has trained 3 rescue dogs to do it! Reggie, Shadow and Alfie can all fly a plane for up to 15 minutes. They can fly straight, on turns, and even in a figure 8. They were trained to turn left when little blue lights lit up, right for red lights, and straight for white lights. After 4 months the dogs could fly a real plane. Now they have to learn to stop sniffing their copilot.

*Wee ones:* If Mark has trained 5 driving dogs and 3 flying dogs, are there more driving dogs or flying dogs?

*Little kids: *If 1 dog flies 2 times this week and another dog flies twice as many times, how many times does the 2nd dog fly? *Bonus:* How many more times would that 2nd dog have to fly to reach 10 dog flights?

*Big kids:* If a people plane flies 600 miles an hour, and the dog plane flies that speed minus 200, plus 50, minus another 100, how fast is the dog plane? *Bonus:* If the dogs fly some 3-digit number of miles whose digits are all different, go from smallest to biggest from left to right, and add up to 7, how many miles must the dog have flown?

Answers:

*Wee ones:* More driving dogs.

*Little kids:* 4 times. *Bonus:* 6 more times.

*Big kids:* 350 miles an hour. *Bonus:* 124 miles. The only sets of digits that can add to 7 are 1, 1 and 5; 1, 2, and 4; 1, 3 and 3; and 2, 2 and 3. Only 1, 2 and 4 has 3 different digits.