MathsheetsMake a worksheet → MathsheetsMake a worksheet →39 lessons in teaching order · every Grade 1 standard covered · free printable worksheets with answer keys
Enrichment (beyond the Grade 1 standards): continue an arithmetic sequence that grows or shrinks by a constant whole number by filling in the missing numbers.
Make worksheets →Solve add-to, take-from, put-together, take-apart and compare word problems within 20. Pick one situation to drill, or mix them; the answer can be the result or an unknown operand shown with a box.
Make worksheets →Solve word problems that add three whole numbers with a total within 20. Look for two numbers that make ten first, then add the third.
Make worksheets →Summing three single-digit addends with a total up to 20, using grouping strategies.
Make worksheets →Apply properties of operations to add: add in any order — count the pictures, write the turnaround fact, or fill the missing number — and group the two numbers that make ten first.
Make worksheets →Understand subtraction as a missing addend: find 10 - 8 by asking what adds to 8 to make 10.
Make worksheets →Relate counting to addition: start at the first number and count on, and the last number you say is the sum.
Make worksheets →Add or subtract within 20 on a double ten-frame: make a ten to add, read two near-ten addends as 10 minus their empty cells, or take the subtracted number from the full ten.
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