Key Idea1 of 3
Seventies to Nineties
Three more rows! The seventies: 71 to 80. The eighties: 81 to 90. The nineties: 91 to 100. Each row follows the same ones pattern you already know.
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Math — Counting to 100
Three more rows! The seventies: 71 to 80. The eighties: 81 to 90. The nineties: 91 to 100. Each row follows the same ones pattern you already know.