AMO Grade 4 · 1. Numbers, place value and digits
Read every number by its places, use digit conditions to cut the choices, count digits place by place, and solve letter puzzles column by column.
Write a number by place value and make the largest or smallest number from given digits.
Find numbers that satisfy conditions on their digits (digit sum, "times" links, bounds).
Count how often a digit is written in a list of page numbers.
Solve letter puzzles column by column using carries, size and last digits.