โ12.1 Addition of two-digit numbers with one-digit numbers (without carrying)
Learn how to add a two-digit number with a one-digit number without carrying.
โ12.2 Addition of two-digit numbers with two-digit numbers (without carrying)
Learn how to add two-digit numbers with two-digit numbers where the sum of the ones digits is not greater than 9 (no carrying needed).
โ12.3 Adding two-digit numbers (vertical format, no carrying)
Learn how to add two-digit numbers using vertical format, where the sum of ones is less than 10
โ12.4 Adding a two-digit number and a one-digit number (with carrying)
Learn how to add a two-digit number and a one-digit number when the ones place sum is greater than 9 and requires carrying to the tens place
โ12.5 Adding two-digit numbers (with carrying)
Learn how to add two-digit numbers in vertical format, when the sum of the ones is greater than 9 and carrying is required