https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/v/comparing-adding-1-and-10 2021-02-15T02:44:58Z Adding 1 vs. adding 10 Sal talks about the difference between adding 1 and adding 10. video https://cdn.kastatic.org/googleusercontent/_8jKI-fgx7SsNG5bhsJq744a4mmhtmAU59qEZNCMfomutB2M_cGm9YIfdSnj9Mu-jsas_Nug8GlJJVFlWgoL_TGU Adding 1 vs. adding 10 Sal talks about the difference between adding 1 and adding 10. https://cdn.kastatic.org/ka-youtube-converted/mKsKU0BAiRM.mp4/mKsKU0BAiRM.mp4 137 Adding 1s and 10s https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/e/add-within-100--level-1 2026-04-07T23:17:37.123726494Z Add 1 or 10 Practice solving problems like 34+1 and 34+10. Casey McCann exercise https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-100/cc-2nd-add-100/v/understanding-place-value-while-adding-tens 2021-06-24T11:10:10Z Understanding place value when adding tens Sal adds 23 + 30 by thinking about place value. video https://cdn.kastatic.org/googleusercontent/6maBE8dKBgp9XhS7vwVX-hMUzKocEu8HlDNUzCOruU6ifVeYIoJpmZl4PTmsdWba8K2XY9efVObpUQgzr1ZvwD1d Understanding place value when adding tens Sal adds 23 + 30 by thinking about place value. https://cdn.kastatic.org/ka-youtube-converted/Dy5uDkOoMNc.mp4/Dy5uDkOoMNc.mp4 196 Adding 1s and 10s https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-100/cc-2nd-add-100/v/understanding-place-value-when-adding-ones 2021-06-24T11:10:09Z Understanding place value when adding ones Sal adds 37 + 2 by thinking about place value. video https://cdn.kastatic.org/googleusercontent/suPl8aA7-kHcmKdFyNSEzuNSUiLIxG6pQNq_aEK8VnUpjfB-P5pArtqnKpJjmNSpCkcOMM7rI2Fwx42_btWY2OY Understanding place value when adding ones Sal adds 37 + 2 by thinking about place value. https://cdn.kastatic.org/ka-youtube-converted/7_QPAdHILzw.mp4/7_QPAdHILzw.mp4 156 Adding 1s and 10s https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:add-within-20/v/adding-within-20 2021-02-08T10:47:59Z Adding 7 + 6 Sal adds 7 + 6 using the number line. Sal Khan video https://cdn.kastatic.org/googleusercontent/kcVuw5mNJ4h8ricO56H2jpYjyBLymZ8yfk0-AJMnmgwUXvNbfcbMZjBL1ivs5gY9d3xsW_ck-lY4gYj6iLqmHfU2 Adding 7 + 6 Sal adds 7 + 6 using the number line. https://cdn.kastatic.org/ka-youtube-converted/ZgzpTx-s9Zo.mp4/ZgzpTx-s9Zo.mp4 233 Adding 1s and 10s https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:add-within-20/v/adding-within-20-example 2023-06-30T02:13:42.781179102Z Adding 8 + 7 In the video it demonstrates adding 8 + 7 using a visual approach. Adding emphasizes the concept of place value, showing that 15 is made up of 1 group of 10 and 5 ones. This method helps students understand addition within 20 in a more concrete way. Sal Khan video https://cdn.kastatic.org/googleusercontent/uDRORvWndHjMR6cY97AWiWoOvYr17R-fZ2T7Ikfogn5zBIFQmY_FOZ7yIiWgSqEr_ia_RYj049-KnHRtc15J-Oq3 Adding 8 + 7 In the video it demonstrates adding 8 + 7 using a visual approach. Adding emphasizes the concept of place value, showing that 15 is made up of 1 group of 10 and 5 ones. This method helps students understand addition within 20 in a more concrete way. https://cdn.kastatic.org/ka-youtube-converted/AK0NZITv5Ns.mp4/AK0NZITv5Ns.mp4 199 Adding 1s and 10s https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/a/adding-1s-and-10s-practice 2021-04-29T08:00:04Z Adding 1s and 10s guided practice Find 1 more, 1 less, 10 more, or 10 less than a number. article https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/e/adding-1s-or-10s-to-two-digit-numbers 2026-04-07T23:17:37.123726494Z Add 1s or 10s (no regrouping) Practice solving problems like 34+5 and 34+50. Cam exercise