Hundred chart: 10 more and 10 less

Grade 1 · Patterns, sequences and logic

Three rows of a hundred chart, with some numbers hidden. The student is given a start number and taps the box that is 10 more, 10 less, 1 more or 1 less.

The box asked for is always hidden, so the answer comes from position: straight down for 10 more, straight up for 10 less, one step along for 1.

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What changes each time

• Any three rows of the chart
• 10 more and 10 less come up twice as often as 1 more and 1 less
• About a third of the numbers hidden

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