Counting by 5s, 10s and 100s
Grade 2 · Level 1 · Sheet 1the answers
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- 1.
Count by 10s. What is missing?
670680690? - 2.
Count by 10s. What is missing?
400410?430 - 3.
Count by 10s. What is missing?
570580?600 - 4.
Count by 10s. What is missing?
60?8090 - 5.
Count by 10s. What is missing?
490500?520 - 6.
Count by 10s. What is missing?
300310320? - 7.
Count by 10s. What is missing?
5060?80 - 8.
Count by 10s. What is missing?
450460470? - 9.
Count by 10s. What is missing?
240?260270 - 10.
Count by 10s. What is missing?
750760770? - 11.
Count by 10s. What is missing?
910920?940 - 12.
Count by 10s. What is missing?
770780790?
Show the answer key
- 1.700
- 2.420
- 3.590
- 4.70
- 5.510
- 6.330
- 7.70
- 8.480
- 9.250
- 10.780
- 11.930
- 12.800
Answer key · Counting by 5s, 10s and 100s · Level 1 · Sheet 1
- 1.700
- 2.420
- 3.590
- 4.70
- 5.510
- 6.330
- 7.70
- 8.480
- 9.250
- 10.780
- 11.930
- 12.800
The mistakes behind most wrong answers
A wrong answer in counting by 5s, 10s and 100s is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.
Count by 10s. What is missing?
900910920?The answer is 930. A child who answers 921 probably counted one too many or too few.
Count by 10s. What is missing?
210?230240The answer is 220. A child who answers 230 probably counted the last one twice.
Count by 10s. What is missing?
960?980990The answer is 970. A child who answers 960 probably started counting from the wrong number.
In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.