Math Bubbles is a mental-maths game for primary school, grades 1 to 6. The question sits at the top, bubbles rise from below and the child pops the bubble with the right answer. If the right bubble floats away there is no penalty; the same question comes back with fresh bubbles.

• 141 levels across six grades, each following that grade's math book

• Grade 1: adding and subtracting to 10, number pairs that make ten

• Grade 2: adding and subtracting to 15 and 20

• Grade 3: mental three-digit sums, times tables 2 to 5 and 10 with division

• Grade 4: times tables 6 to 9 and the full table, multiplying by 10 and 100

• Grade 5: mental multi-digit multiplication and division, decimal sums

• Grade 6: multiplying and dividing decimals by whole numbers, moving the point

• The child picks their own grade at the start

• A Persian narrator reads every instruction aloud

• Mistakes are never punished; the child is encouraged and carries on

• Works offline after install

About the first 40% of each grade is free forever, 59 of 141 levels. The free version shows child-appropriate ads: only between levels on the result screen, and banners outside gameplay. The full game is a one-time purchase of 99,000 Toman, no subscription; it removes all ads and counts toward Nikipoo School later. It is one of the 44 games in Nikipoo School.