Curious Ishaan & Guru Mommy's video: Mental Math Addition Subtraction under 20 by making a Ten - By 5 year old Ishaan

Continuing our MENTAL MATH series: https://www.youtube.com/playlist?list=PL0jv8L_zOXuhtcS68ZOMRCcdnQCdgpwvr After having learned Number Bonds and some math facts, here we learn to add and subtract numbers under 20, by making a TEN, which is more aligned with the MENTAL MATH way of solving problems. We are going to see 4 types of problems: 1) Addition and Subtraction where the 2nd number added is less than 5. Use the count on/count back method of addition and subtraction or other methods covered in our addition and subtraction videos. https://www.youtube.com/playlist?list=PL0jv8L_zOXuh7NvTisa7EoTB3NdfwK0T- 2) When the 2nd Number added is more than 5, we use base 10 of our number system to do the problem, rather than just counting on.. To able to do this method, a)We should be thorough with base 10 of number system for counting numbers covered in the video -All about Numbers https://youtu.be/LhVEceWeLu4 b) though with the concept of NUMBER BONDS https://youtu.be/NvfW-udeZqY 3) Some problems simply means knowing our Math Facts well. Refer Math Facts video. https://youtu.be/3xMWgDI0mGY 4) Some problems can be solved faster knowing the concept of Fact Families (stayed tuned, coming up next) In this video we have covered a problem in many ways, on paper, using math link cubes, using egg cartons(pretending it to be a base ten system) and numeral cards. Making it super fun and interactive and a sure way to get the concept through repetition of the same concept in many ways! Link to the Mathlink cubes: https://amzn.to/2y4QX8U Stay tuned for the next set of videos. Subscribe to our YouTube channel with the bell 🛎 icon to get notifications for all our new videos! Thank you!