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Percentages

Calculate percentages mentally by flipping, halving, and using the 10% building-block method.

Build from 10%: find 10% first, then double/halve/add to reach the target percentage.

Visual Methods

Percent approach board showing 10 percent, 5 percent, and 15 percent blocks — 1Approach

Percent flip step 1: 8 percent of 50 equals 50 percent of 8 — 2The Flip Trick

Percent building step 1: 10 percent of 240 equals 24 — 310% Building Blocks

Common percent fraction board for 25 percent, 33 and one third percent, 12.5 percent, and 75 percent — 4Common Fractions

Percentage change board for price moving from 80 to 92 — 5Percentage Change

Level Visual Guides

30 levels. Each level opens as 6 visual blocks.

Level 1 visual plan for 1d% of 1d (easy)

Level 1 - foundation

1d% of 1d (easy)

6 image blocks

Level 2 visual plan for 1d% of 1d (harder)

Level 2 - foundation

1d% of 1d (harder)

6 image blocks

Level 3 visual plan for 1d% of 2d (no carry)

Level 3 - realistic untimed

1d% of 2d (no carry)

6 image blocks

Level 4 visual plan for 1d% of 2d (carry)

Level 4 - foundation

1d% of 2d (carry)

6 image blocks

Level 5 visual plan for 1d% of 2d mastery (X≥6, carry)

Level 5 - foundation

1d% of 2d mastery (X≥6, carry)

6 image blocks

Level 6 visual plan for 1d% of 3d (no carry)

Level 6 - foundation

1d% of 3d (no carry)

6 image blocks

Level 7 visual plan for 1d% of 3d (tens carry)

Level 7 - foundation

1d% of 3d (tens carry)

6 image blocks

Level 8 visual plan for 1d% of 3d (both carry)

Level 8 - realistic untimed

1d% of 3d (both carry)

6 image blocks

Level 9 visual plan for 1d% of 3d (any)

Level 9 - foundation

1d% of 3d (any)

6 image blocks

Level 10 visual plan for 1d% of 3d mastery (X≥6, both carries)

Level 10 - foundation

1d% of 3d mastery (X≥6, both carries)

6 image blocks

Level 11 visual plan for 2d% of 3d (small)

Level 11 - build-up

2d% of 3d (small)

6 image blocks

Level 12 visual plan for 2d% of 3d (digits 1-3)

Level 12 - build-up

2d% of 3d (digits 1-3)

6 image blocks

Level 13 visual plan for 2d% of 3d (mid tens)

Level 13 - realistic untimed

2d% of 3d (mid tens)

6 image blocks

Level 14 visual plan for 2d% of 3d (wide)

Level 14 - build-up

2d% of 3d (wide)

6 image blocks

Level 15 visual plan for 2d% of 3d mastery (X tens 4-6)

Level 15 - build-up

2d% of 3d mastery (X tens 4-6)

6 image blocks

Level 16 visual plan for 2d% of 3d (mid-high)

Level 16 - build-up

2d% of 3d (mid-high)

6 image blocks

Level 17 visual plan for 2d% of 3d (high tens)

Level 17 - build-up

2d% of 3d (high tens)

6 image blocks

Level 18 visual plan for 2d% of 3d (large digits)

Level 18 - realistic untimed

2d% of 3d (large digits)

6 image blocks

Level 19 visual plan for 2d% of 3d (full range)

Level 19 - build-up

2d% of 3d (full range)

6 image blocks

Level 20 visual plan for 2d% of 3d mastery (X≥0, full Y)

Level 20 - build-up

2d% of 3d mastery (X≥0, full Y)

6 image blocks

Level 21 visual plan for 2d% of 4d (small)

Level 21 - mastery

2d% of 4d (small)

6 image blocks

Level 22 visual plan for 2d% of 4d (digits 1-3)

Level 22 - mastery

2d% of 4d (digits 1-3)

6 image blocks

Level 23 visual plan for 2d% of 4d (mid tens)

Level 23 - realistic untimed

2d% of 4d (mid tens)

6 image blocks

Level 24 visual plan for 2d% of 4d (wide)

Level 24 - mastery

2d% of 4d (wide)

6 image blocks

Level 25 visual plan for 2d% of 4d mastery (X tens 4-6)

Level 25 - mastery

2d% of 4d mastery (X tens 4-6)

6 image blocks

Level 26 visual plan for 2d% of 4d (mid-high)

Level 26 - mastery

2d% of 4d (mid-high)

6 image blocks

Level 27 visual plan for 2d% of 4d (high tens)

Level 27 - mastery

2d% of 4d (high tens)

6 image blocks

Level 28 visual plan for 2d% of 4d (large digits)

Level 28 - realistic untimed

2d% of 4d (large digits)

6 image blocks

Level 29 visual plan for 2d% of 4d (full range)

Level 29 - mastery

2d% of 4d (full range)

6 image blocks

Level 30 visual plan for 2d% of 4d ULTIMATE (X≥0, lead 5-9)

Level 30 - mastery

2d% of 4d ULTIMATE (X≥0, lead 5-9)

6 image blocks

Practice this category

Use the same method on live percentages levels.

Start Percentages Workout

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