"小學雙語數學/KA題集" 修訂間的差異

於 2018年11月14日 (三) 00:14 的修訂

• 挑戰 1
  1. Erica had a collection of 55 stuffed animals.
  2. She took out her favorite 7 animals and then equally divided the remaining animals between her 3 little sisters.
  3. How many stuffed animals did each of Erica's sisters get?
  4. Ans: 16 stuffed animals
     • Hint #1 / 3
       • We can subtract to find the total number of stuffed animals Erica gave away.
       • 55-7 = 48 (55, minus, 7, equals, 48)
     • Hint #2 / 3
       • She divided the animals she gave away equally between her 3 little sisters.
       • We can divide 48÷3, (48, divided by, 3) to see how many animals each sister got.
     • Hint #3 / 3
       • Each of Erica's sisters got 16 stuffed animals.
• 挑戰 2
  1. A group of 4 friends is playing cards.
  2. The deck has 70 cards.
  3. To start the game, the dealer makes a pile of 15 cards in the center.
  4. Then the remaining cards are dealt one at a time to each player until all the cards are gone.
  5. What is the greatest number of cards any player will have after all the cards are dealt?
  6. Ans:14 cards

There are 656565 campers at Fun Camp. Only 535353 campers brought sleeping bags. How many campers did not bring sleeping bags?

• 挑戰 3
  1. There are 65 campers at Fun Camp.
  2. Only 53 campers brought sleeping bags.
  3. How many campers did not bring sleeping bags?
  4. Ans: 12 campers
     • Hint #1 / 2
       • To find the number of campers without sleeping bags, we start with the total number of campers and subtract the 53 that did bring sleeping bags.
     • Hint #2 / 2
       • 12 campers did not bring sleeping bags.