Common Core Aligned Resources for 1.OA.B.4
Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
Showing 1 - 30 of 33 resources
St. Patrick's Day Themed Math and Literacy Practice
K - 1st CCSS: Adaptable
Look no further for St. Patrick's Day-themed math and literacy practice worksheets. Math skills allow for practicing counting to 100 by 5s, 10s, and 1s, as well as 10 more or 10 less, writing numbers in word and standard form,...
Study Jams! Relate Addition & Subtraction
3 mins 1st - 4th CCSS: Adaptable
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...
Living Things and Their Needs: The Math Link
K - 3rd CCSS: Adaptable
Enrich your study of living things with these cross-curricular math activities. Following along with the story Tillena Lou's Day in the Sun, learners will practice addition and subtraction, learn how to measure volume and length, work on...
Unknown Numbers in Sums and Differences
1st - 3rd CCSS: Adaptable
You've hit the word problem jackpot with this set of 10 addition and subtraction scenarios! For each, learners have to find a missing number. Sometimes it is the sum or difference, and for others, an addend or minuend. For each, there is...