Grade 3-1
46 problems
Add and subtract by splitting numbers
Simplify long sums using regularity
Sum of all numbers from digit cards
Express a number as consecutive sums
Sum shaded numbers in an array
Work backwards from the result
Broken Clock: Constant Error Rate
Log Cutting: Cuts, Pieces, and Time
Round-Trip Elapsed Time
Direction and distance reasoning
Meeting time of two movers
Comparing speeds and distances
Name shaded part as a fraction
Shade a fraction of a shape
Shrinking self-similar shapes
Building fractions from number cards
Comparing sizes of fractions
Finding equivalent fractions
Find a fraction in a patterned sequence
Fraction word problems via backward reasoning
Fractions meeting given conditions
Recover hidden digits in a vertical sum
Build an equation meeting given conditions
Arrange cards for the smallest valid result
Cryptarithm digit deduction
Numbers with swapped digit places
Largest and smallest from flipped cards
Counting non-square rectangles
Counting right triangles in a figure
Counting squares in a figure
Counting right triangles on a dot grid
Counting segments, lines, and rays
Counting squares including tilted ones
Perimeter of a figure built from squares
Rectangle side and perimeter from equal squares
Side length of a square from fitted figures
Count ways to tile with one piece
Tile a rectangle with distinct pieces
Count distinct shapes from joined pieces
Complete the multiplication equation
Multiplication cryptarithm
Multiplication synthesis challenge
Number satisfying sum and product clues
Complete an arithmetic placement puzzle
Build division expressions meeting conditions
Find unknowns satisfying multiple conditions