№ 1 · Counting · Grade 4
Counting problems for Grade 4
7 problems with worked solutions.
№ 2 · Counting · Grade 4
Five participants greeted one another, with each pair greeting exactly once. How many greetings were there?
№ 3 · Counting · Grade 4
One hundred lockers are numbered in order. Every fourth locker is marked red, and every sixth locker is marked blue. How many lockers have at least one mark?
№ 4 · Counting · Grade 4
A robot moves on a square grid from the lower-left corner to the upper-right corner. It must take exactly 3 steps right and 2 steps up. How many shortest routes are possible?
№ 5 · Counting · Grade 4
How many three-digit numbers can be made from the digits 1, 2 and 3 if each digit must be used exactly once?
№ 6 · Counting · Grade 4
Choose 2 books from 6 different books for a trip. How many choices are possible if order does not matter?
№ 7 · Counting · Grade 4