This resource is designed to help students build number sense and mental math fluency. Each page consists of a series of “number crosses,” where students start with a central number and must determine the values that are:

10 less (the number above)

10 more (the number below)

1 less (the number to the left)

1 more (the number to the right)

This repetitive practice is excellent for developing a strong understanding of place value and improving quick mental calculation skills for two-digit numbers.

Format: Printable PDF

Usage: Perfect for morning work, math centers, homework, or quick warm-up activities.