Build a rectangle

Find the factor pairs of {{ s1_target }}

Use the slider to change the width. If the blocks form a perfect rectangle, you found a factor pair!

Width: {{ s1_width }} Height: {{ s1_target / s1_width }} Height: ?
{{ s1_width }} × {{ s1_target / s1_width }} = {{ s1_target }}

Found Pairs ({{ s1_foundPairs.size }} / {{ s1_totalPairs }})

{{ pair }}
? × ?
Match factor pairs

Factors of {{ s2_target }}

Drag the numbers to complete the multiplication pairs.

{{ row.slots[0] !== null ? row.slots[0] : '?' }}
×
{{ row.slots[1] !== null ? row.slots[1] : '?' }}
=
{{ s2_target }}
{{ item.val }}
All numbers placed!
Tap the multiples

Multiples of {{ s3_base }}

Help the frog cross! Tap the first 5 multiples in order.

Start
🐸
{{ pad.val }}
🐸
Next target: {{ s3_expectedVal }}
Color by type

Factors vs Multiples

Select a brush, then tap numbers to color them correctly.

{{ card.val }}
🏆

Master of Numbers!

You've conquered factors and multiples. You know how numbers break down and how they build up!

{{ dragState.item.val }}