Fun Math Activities for Developing Addition and Subtraction Skills
Explore engaging math lessons focused on addition and subtraction skills within number bonds up to 20. Practice adding by counting on, solve fluency exercises to make 10 and 20, spot mistakes in reasoning, and enhance problem-solving abilities through completing number sentences. These interactive activities aim to improve math fluency and critical thinking.
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Presentation Transcript
Addition & Subtraction Add by counting on Number bonds to 20 Block 1 Week 1
Lesson 2 Step: Add by counting on (2)
Fluency First Then Now 8 First there were _____. Then _____ more were added. 7 15 Now there is _____.
Fluency First Then Now 9 First there were _____. Then _____ more were added. 4 13 Now there is _____.
Fluency First Then Now 5 First there were _____. Then _____ more were added. 12 17 Now there is _____.
Fluency How many more to make 10? 0 1 2 3 4 5 6 7 8 9 10 ______ + ______ = 10 6 4
Fluency How many more to make 10? 0 1 2 3 4 5 6 7 8 9 10 ______ + ______ = 10 3 7
Fluency How many more to make 20? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ______ + ______ = 20 14 6
Fluency How many more to make 20? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ______ + ______ = 20 9 11
Fluency How many more to make 20? 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ______ + ______ = 20 3 17
Reasoning Spot and explain the mistake. 6 + 8 = 14 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 The jumps on the number line show 8 + 6. It should show 6 plus 8 more.
Problem solving Complete the Then box and complete the number sentence. First Then Now ______ + ______ = ______ 7 5 12