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There are 8 books in Bella's backpack. Anna has more books in her backpack than Bella does. How many books are there in Anna's backpack?

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9
First-grade skills Show expanded view
Counting and number patterns
Addition
Addition - skill builders
Subtraction
Subtraction - skill builders
Mixed operations
Comparing
Estimating
Fractions
Geometry
Spatial sense
Data and graphs
Measurement
Money
Patterns
Probability and statistics
Sorting, ordering, and classifying
Time