In Grade 1, instructional time should focus on four critical areas: (1) developing understanding of addition, subtraction, and strategies for addition and subtraction within 20; (2) developing understanding of whole number relationships and place value, including grouping in tens and ones; (3) developing understanding of linear measurement and measuring lengths as iterating length units; and (4) reasoning about attributes of, and composing and decomposing geometric shapes.

The core math topics covered in grade 1 typically are:

**Numbers and Operations **

• Counting up to 120
• Place value: tens and ones
• Use place value to add and subtract
• Word problems within 20
• How adding and subtracting relate to each other
• Add and subtract within 20
• The meaning of the equal sign
• Working with equations

Geometry

• Describe shapes
• Circles and rectangles into parts

Measurement

• Measure length
• Tell time
• Organize objects

The 50 puzzles in this worksheet cover all of these topics. The worksheet is printable, and the answers are provided separately at the end.