61 P4.WN.JM.17102376
Level 3
Alice, Rita and Min have 420 beads altogether. After Rita gave Min 50 beads and Min gave Alice 10 beads, they all have equal number of beads.
  1. How many beads did each girl have in the end?
  2. How many beads did Min have at first?
4 m
W 4 operations Equal stage after Working backwards
62 P4.WN.JM.17102201
Level 2
A library has a certain number of books. In January, the library bought 325 new books and 280 books were loaned out. In February, the library lost 350 books and loaned out 210 books, after which 2831 books were left. How many books were there in the library in the beginning of January?
4 m
W 4 operations Working backwards
63 P4.WN.JM.17102382
Level 3
Risa and Isabelle had 856 stamps altogether. They decided to play a game. In the first round, Isabelle lost 58 stamps to Risa. In the second round, Risa lost 38 stamps to Isabelle. At the end of the two rounds, Isabelle had thrice as many stamps as Risa.
  1. How many stamps did Risa have in the end?
  2. How many stamps did Isabelle have at the beginning of the game?
4 m
W 4 operations Times as many Internal transfer Working backwards Units table
64 P2.WN.ED.18011961
Level 2
Karen has some money. She spends $22 on notebooks. Then her mother gives her $17.If she has $83 in the end, how much did Karen have at first?
4 m
W Addition & subtraction Model Part-whole Working backwards
65 P2.WN.ED.18011962
Level 2
Mike had some stamps. He gave 5 stamps to John and bought another 14 more stamps. Now, he has a total of 32 stamps. How many stamps had Mike at first?
4 m
W Addition & subtraction Model Part-whole Working backwards

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