Cardinal Math

Grades 2–4 · 2.NBT.4, 4.NF.7 · sheet 20 of 30

Comparing numbers and decimals

A printable worksheet, new every day, with a key that names the mistake.

  • Twelve pairs of three-digit numbers, some set up to trap a child who compares the ones digit first, and eight decimal pairs like 0.5 and 0.45.
  • The key names the rule behind a wrong sign: the ones digit decides, the longer decimal is bigger, or the shorter one is.
Answer key Another sheet →

Comparing numbers and decimals

Write <, > or = in the circle.

Name Date
  1. 1 0.80.63
  2. 2 0.90.90
  3. 3 908819
  4. 4 375311
  5. 5 0.140.3
  6. 6 753257
  7. 7 0.900.9
  8. 8 0.670.2
  9. 9 607167
  10. 10 690672
  11. 11 0.170.34
  12. 12 798760
  13. 13 535915
  14. 14 181189
  15. 15 0.530.62
  16. 16 489808
  17. 17 940944
  18. 18 448668
  19. 19 0.50.83
  20. 20 938809
Cardinal Math · sheet 20 key: cardinalmath.com/worksheets/comparing/20/key/

The app does this live.

It picks the next problem from the last answer, skips ahead or doubles back, and animates the teaching instead of handing over a rule. Inside the app the same patterns the key names are caught as your child plays.

How to use the key

Mark the sheet against the key. Beside each answer it lists what the known mistakes would have written. One wrong answer is a slip. The same pattern three times is a rule your child is following, and the guide says what to do about it tonight.

On this sheet the key can tell apart: comparing numbers by the ones digit first (5 problems), the longer decimal is bigger (4 problems), the shorter decimal is bigger (4 problems).

Cardinal Math watches for all of these, every day.

Inside the app the same patterns are caught as your child plays, across the whole of K to grade 5, and explained to you in plain words. One price, no ads, no streaks. Coming to iPhone and iPad.

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