Curated OER
Horizontal Addition
Here are four examples of double-digit horizontal addition. Learners are shown how to compute numbers horizontally, by first adding the tens and then the ones columns and then adding them both together. This is a great way to boost...
Curated OER
Addition Practice #1
Show young mathematicians that they are fully capable of mentally adding two-digit numbers. They start by solving 12 two-addend problems (all with two-digit numbers and aligned horizontally). There is no room to show work. Consider...
Curated OER
Tens Barrier Addition 4
In this addition worksheet, students solve 36 problems in which a two digit number is added to a one digit number. The title meaning is not clear as there are no directions or examples. Problems are horizontal and not stacked.
Curated OER
Addition Drills, part 3
Here's an addition drill for scholars who are already comfortable with regrouping. There are 30 horizontally-aligned problems here, each with two 2-digit addends. Mathematicians use three examples as reference as they solve each of...
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Addition: Up to 2-Digits Using Place Values
In this addition worksheet, students solve 9 problems in which two digit numbers are added with no regrouping. Students rewrite an addition sentence that is in horizontal format and stack the numbers in a place value chart.
Curated OER
Roll Seven!
Roll Seven is a fun and engaging dice game that encourages the use of mental math.