Rests are just as valuable as normal notes in music. Recognising them, like most things you learn in grade 1, will always be needed during the rest of your music career.
The Rests worksheets are very similar to Note Values Worksheets, as rests are similar to note types.
As always, do as many questions as needed until you become comfortable with rests. When you have already learnt what you need from the questions, there is no point in continuing to do them.
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