Adding 21
for 2nd grade
Add 21 by first adding 20 to a number and then adding 1 more
Home / 2nd grade / Add + Subtract / Add 11, 21, 31, 41 / Adding 21
Below is a table showing the first 8 question answer pairs for the topic "Adding 21" as used in the lessons for this topic. Our games and tests for the topic use these 8 items plus 20 additional question answer pairs.
The topic "Adding 21" is in the category Add + Subtract for 2nd grade (ages 7 to 8).
1 / 8
Adding 21 to 17 by first adding 20 then adding 1 more gives 38
2 / 8
Adding 21 to 27 by first adding 20 then adding 1 more gives 48
3 / 8
Adding 21 to 68 by first adding 20 then adding 1 more gives 89
4 / 8
Adding 21 to 33 by first adding 20 then adding 1 more gives 54
5 / 8
Adding 21 to 47 by first adding 20 then adding 1 more gives 68
6 / 8
Adding 21 to 162 by first adding 20 then adding 1 more gives 183
7 / 8
Adding 21 to 278 by first adding 20 then adding 1 more gives 299
8 / 8
Adding 21 to 343 by first adding 20 then adding 1 more gives 364
Revise 'Adding 21' with one of our games for 2nd grade
Home / 2nd grade / Add + Subtract / Add 11, 21, 31, 41 / Adding 21
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
Counting * Comparing numbers * Pattern * Place value * Addition * Subtraction * Add + Subtract * Multiplication * Division * Multiply + Divide * Fractions * Measurements * Shapes * Position + Direction * Statistics * Algebra *