Mental Math Addition Worksheet: Missing Addends and Adding Tens, 3rd Grade
- Silver Key
- Gold Key
- Master Key
Description
Build number sense with this 3rd grade mental math addition worksheet. Students find missing addends (77 + __ = 79, __ + 25 = 100) and add multiples of ten to two- and three-digit numbers, such as 117 + 20. Aligned to 3.NBT.A.2, this no prep page is great for math warm ups, fluency practice, back to school review, and homework.
