Addition/subtraction facts, 2nd grade: number rainbows and fact families

This video helps students practice subtraction facts where you subtract from 12, such as 12 - 3 and 12 - 7. For that, we use both fact families with 12, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 12. This visual tool clearly shows students how the numbers are paired to make 12. We also briefly go through all the fact families with single-digit numbers where the sum is 12 (one with 2 + 10, another with 3 + 9, then one with 4 + 8, one with 5 + 7, and one more with 6 + 6). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 12, such as 12 - 3 and 12 - 7. For that, we use both fact families with 12, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 12. This visual tool clearly shows students how the numbers are paired to make 12. We also briefly go through all the fact families with single-digit numbers where the sum is 12 (one with 2 + 10, another with 3 + 9, then one with 4 + 8, one with 5 + 7, and one more with 6 + 6). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 14, such as 14 - 6 and 14 - 9. For that, we use both fact families with 14, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 14. This visual tool clearly shows students how the numbers are paired to make 14. We also briefly go through all the fact families with single-digit numbers where the sum is 14 (one with 10 + 4, another with 9 + 5, then one with 8 + 6, and one more with 7 + 7). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 14, such as 14 - 6 and 14 - 9. For that, we use both fact families with 14, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 14. This visual tool clearly shows students how the numbers are paired to make 14. We also briefly go through all the fact families with single-digit numbers where the sum is 14 (one with 10 + 4, another with 9 + 5, then one with 8 + 6, and one more with 7 + 7). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 13, such as 13 - 5 and 13 - 7. For that, we use both fact families with 13, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 13. This visual tool clearly shows students how the numbers are paired to make 13. We also briefly go through all the fact families with single-digit numbers where the sum is 13 (one with 3 + 10, another with 4 + 9, then one with 5 + 8, and one more with 6 + 7). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 13, such as 13 - 5 and 13 - 7. For that, we use both fact families with 13, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 13. This visual tool clearly shows students how the numbers are paired to make 13. We also briefly go through all the fact families with single-digit numbers where the sum is 13 (one with 3 + 10, another with 4 + 9, then one with 5 + 8, and one more with 6 + 7). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 11, such as 11 - 2 and 11 - 7. For that, we use both fact families with 11, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 11. This visual tool clearly shows students how the numbers are paired to make 11. We also briefly go through all the fact families with single-digit numbers where the sum is 11 (one with 1 + 10, another with 2 + 9, then one with 3 + 8, one with 4 + 7, and one more with 5 + 6). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at

This video helps students practice subtraction facts where you subtract from 11, such as 11 - 2 and 11 - 7. For that, we use both fact families with 11, and a NUMBER RAINBOW. In the number rainbow, we connect two numbers with an arc if their sum is 11. This visual tool clearly shows students how the numbers are paired to make 11. We also briefly go through all the fact families with single-digit numbers where the sum is 11 (one with 1 + 10, another with 2 + 9, then one with 3 + 8, one with 4 + 7, and one more with 5 + 6). Lastly I drill the viewers with the subtraction facts -- Mathy joins in that also! I pause for a little while to let children answer the facts - thus this video can take the place of drilling by a teacher. Check out also Math Mammoth Grade 2 curriculum at