Numberblocks Addition - Watch Numbers Add Up

Pick two Numberblocks, combine them, and see the sum. This free addition playground helps kids connect colorful blocks with real equations.

First Numberblock

100%
3
+

Second Numberblock

100%
5

What Is Numberblocks Addition?

Numberblocks addition turns adding into a visual action. Instead of only seeing 3 + 5 = 8 as symbols, children can see one group of three blocks and one group of five blocks become a bigger group of eight.

Use this page with the Numberblocks Number Bonds tool to practice parts and wholes, or open the Numberblocks 1 to 100 chart when your child wants to count on from the answer.

How to Use the Numberblocks Addition Tool

1

Pick Your First Number

Use the first slider to choose a Numberblock from 1 to 50.

2

Pick Your Second Number

Use the second slider to choose the Numberblock you want to add.

3

Watch Them Combine

Press Add Them to reveal the total and connect the blocks to the equation.

4

Try Quiz Mode

Switch to Quiz Mode and type the sum before checking the answer.

Addition Facts Table 1 to 10

1+1=21+2=31+3=41+4=51+5=61+6=71+7=81+8=91+9=101+10=11
2+1=32+2=42+3=52+4=62+5=72+6=82+7=92+8=102+9=112+10=12
3+1=43+2=53+3=63+4=73+5=83+6=93+7=103+8=113+9=123+10=13
4+1=54+2=64+3=74+4=84+5=94+6=104+7=114+8=124+9=134+10=14
5+1=65+2=75+3=85+4=95+5=105+6=115+7=125+8=135+9=145+10=15
6+1=76+2=86+3=96+4=106+5=116+6=126+7=136+8=146+9=156+10=16
7+1=87+2=97+3=107+4=117+5=127+6=137+7=147+8=157+9=167+10=17
8+1=98+2=108+3=118+4=128+5=138+6=148+7=158+8=168+9=178+10=18
9+1=109+2=119+3=129+4=139+5=149+6=159+7=169+8=179+9=189+10=19
10+1=1110+2=1210+3=1310+4=1410+5=1510+6=1610+7=1710+8=1810+9=1910+10=20

Frequently Asked Questions