The exercise itself is in German; the explanation pages it links to are in Turkish.
Zahlen (numbers)
Numbers are a cornerstone of A1 German. 13–19 end in -zehn, the tens end in -zig (and dreißig); in compound numbers the units come first (einundzwanzig = 21). hundert and tausend build the large numbers. You will work out the correct forms yourself in the exercise. All exercise content is in German.
Recognise: match the figure with the number written out in words.
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What is in the "Zahlen" exercise?
The "Zahlen" exercise has 5 steps with 50 questions in total: 10 matching items, 30 multiple-choice questions and 10 gap-fill items.
The steps in order: Match · Spelling · Use · Richtig/Falsch · Write.
You get instant feedback after every answer; the exercise runs in your browser, is free and needs no sign-up or installation.