JPEN

Addition Challenge

Addition 20

20 problems in a row. Go for it!

Progress
1234567891011121314151617181920
Time00:00.00
Mistakes0
Problem 13 + 4 =
Problem 28 + 1 =
Problem 32 + 6 =
Problem 47 + 5 =
Problem 54 + 9 =
Problem 66 + 8 =
Problem 79 + 3 =
Problem 85 + 7 =
Problem 106 + 4 =
Problem 119 + 9 =
Problem 122 + 7 =
Problem 138 + 6 =
Problem 143 + 9 =
Problem 157 + 2 =
Problem 165 + 8 =
Problem 174 + 6 =
Problem 189 + 5 =
Problem 196 + 7 =
Problem 208 + 8 =

Solve a series of addition problems. Each mistake adds 3 seconds to your time.

Choose how many problems you want to challenge, then click Start. The game begins after the countdown!Choose how many problems you want to challenge, then tap Start. The game begins after the countdown!

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