Đề thi Toán quốc tế Hoa Kỳ (AMO) - Lớp 2 tuần 4 - có đáp án

Trích dẫn Đề thi Toán quốc tế Hoa Kỳ (AMO) - Lớp 2 tuần 4 - có đáp án

AMO PROBLEMS - GRADE 2 Question 1. Helena has written down the word KANGAROO twice. How many times did she write the letter A? Question 2. 13 children are playing hide and seek. One of them is the "seeker". After a while 9 children have been found. How many children are still hiding? Question 3. Father hangs the laundry outside on a clothesline. He wants to use as few pegs as possible. For 3 towels he needs 4 pegs, as shown. How many pegs does he need for 9 towels?