Grade 4-1
45 problems
Convert between ancient numeral systems
Find a number from layered conditions
Rename large numbers by place value
Draw the outline of a folded rectangle
Unfold paper after cutting a piece out
Deduce stacking order from overlaps
Which glyphs survive a turn or flip
Spot rotated copies of a given shape
Draw the figure a mirror doubles
Join unlike shapes edge to edge
Cut a figure into congruent pieces
Join congruent shapes edge to edge
Find the rule, fill the blank
Find a far-off term of a sequence
Sum an evenly spaced sequence
Locate a number in a repeating cycle
Find the rule in stacked equations
Find an entry by row and column
Rule for a growing matchstick figure
Rabbit pairs and the Fibonacci sequence
Sierpinski triangle stage counting
Counting palindromic numbers
Ascending and descending digit numbers
Find the nth largest card number
Count digits used over a range
Count how often each digit appears
Sum of every digit written
Find angles by grouping equal pairs
Count acute angles among intersecting lines
Angles from overlapping right-triangle set squares
Chase angles through triangles in a crossing figure
Angle made by folding rectangular paper
Sum of a polygon's exterior angles
Times whose clock-hand angle is acute
Angles swept by the clock hands
Where the hour hand sits within the hour
Infer and use the cross multiplication method
Order products by where digits are placed
Simplify products by decomposing factors
Find the divisor from remainder clues
Numbers whose quotient equals the remainder
Surplus and shortage when sharing equally
Cryptarithm: letters stand for digits
Magic cross with equal line sums
Recover erased digits in long multiplication