What are their house numbers?Īnswer: 19 and 91 20. The difference between their house numbers ends with 2. Alex’s house number is the reverse of Dev’s house number. There are 100 houses in the neighborhood where Alex and Dev live. If it takes 52 days for the flowers to fill the garden, how many days would it take for them to fill half the garden?Īnswer: 51 19. Every day, the number of flowers doubles. You planted sunflower seeds in your garden. Without looking, what is the smallest number of socks you should take out to guarantee a matching pair?Īnswer: 3 18. Your sock drawer contains 18 white socks and 18 blue socks. How much did she leave altogether?Īnswer: $12,000 17. She left a sixth to her brother, and the remainder, $1,000, to the animal shelter. Grandmother died and left half her money to her granddaughter and half of that amount to her grandson. Solve this in your head (no writing it down!). What numbers make these two equations true?Īnswer: A = 1, B = 2, C = 3, and D = 6 15. (Only ONE of the coins is not a nickel!) 14. What are the two coins?Īnswer: A quarter and a nickel. How much was each item?Īnswer: The shoes cost $125, the shirt $25. Jake bought a pair of shoes and a shirt, which cost a total of $150. 16 ounces = 1 pound, no matter what material is being weighed. Which weighs more: 16 ounces of feathers or a pound of solid gold?Īnswer: They weigh the same. What single digit appears most frequently between and including the numbers 1 and 1,000?Īnswer: 1 11. Lee have?Īnswer: 5 (All of the daughters have the same brother.) 10. If 3 cats can catch 3 bunnies in 3 minutes, how long will it take 100 cats to catch 100 bunnies?Īnswer: 3 minutes 9. Use the numbers 2, 3, 4, and 5 and the symbols + and = to make a true math equation.Īnswer: 2 + 5 = 3 + 4 8. When the first boy is 100, how old will his brother be?Īnswer: 99 7.
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