How the Basic Double-Digit Math test works
Fifteen questions share one 10-minute clock, one per screen with four options and no way back. They are spread across four skill areas: addition and subtraction, multiplication and division, calculating time, and nearest number.
TestGorilla’s practice set shows the style: a missing number in a sum of four, the minutes between two morning clock times, rounding to the nearest hundred, and picking the multiple of a given number. The numbers stay at one or two digits.
TestGorilla rates it Entry-level and pitches it at manufacturing and industrial workers, cashiers and hospitality staff, roles that need everyday arithmetic rather than problem solving.
A shortcut for each skill area
At this size, the right shortcut beats the calculator:
- Missing number in a sum: add the numbers you know, then subtract that total from the answer.
- Time between two clock times: count up to the next full hour, then whole hours, then the minutes left. Never subtract clock times as if they were ordinary numbers.
- Rounding: look only at the digit after the one you are rounding to. 5 or more rounds up.
- Multiples: divide each option by the number, or use quick tests such as the last digit for 2, 5 and 10.
- Estimate before choosing. In most questions one or two options are far from a rough answer.
Worked examples
Time. A shift starts at 7:48 am and the first break is at 10:15 am. How many minutes apart are they? Options: 133, 147, 167, 267.
From 7:48 to 8:00 is 12 minutes, 8:00 to 10:00 is 120 and 10:00 to 10:15 is 15, so 12 + 120 + 15 = 147. Check: 7:48 to 10:48 is 180 minutes, and 10:15 is 33 minutes earlier, 180 − 33 = 147. The trap, 267, is 1015 − 748 done as ordinary numbers.
Missing number. 17 + ? + 26 + 9 = 71. Options: 9, 19, 21, 29.
The known numbers add to 17 + 26 + 9 = 52, and 71 − 52 = 19. Check: 17 + 19 = 36, 36 + 26 = 62, 62 + 9 = 71.
Tips for the real Basic Double-Digit Math test
- Aim for about 40 seconds a question, and much less on the plain sums so the time questions get more.
- Use mental arithmetic first. A calculator is allowed, but typing two-digit sums often takes longer than doing them.
- Write the hour and minute steps down for every time question; that is where most marks are lost.
- Pick an option on every screen. A wrong answer costs nothing, and a skip is marked wrong.
- Keep the test in full-screen. Leaving it hides the question while your time keeps running.
Practise Basic Double-Digit Math on CogniPrep
Ours has 15 questions on one 10-minute clock, four options each, generated fresh each sitting, with the four skill areas spread as evenly as 15 allows. One question per screen, no going back and a skip marked wrong. You get a raw percentage and a percentile against CogniPrep players, with harder questions weighted more, plus feedback on each skill area.