Adding and taking away big numbers
Grade 4 · Level 4 · Sheet 1the answers
Free from tutor.in4me.app · 4.NBT.B.4 · Five minutes a day online, and the difficulty follows your child.
- 1.690100−511808
- 2.406301−246587
- 3.586873−293859
- 4.53769−11984
- 5.495720−181484
- 6.308465−222564
- 7.48108−29747
- 8.457953−375013
- 9.242301−23520
- 10.765689−576643
- 11.933142−420154
- 12.788067−540177
Show the answer key
- 1.178,292
- 2.159,714
- 3.293,014
- 4.41,785
- 5.314,236
- 6.85,901
- 7.18,361
- 8.82,940
- 9.218,781
- 10.189,046
- 11.512,988
- 12.247,890
Answer key · Adding and taking away big numbers · Level 4 · Sheet 1
- 1.178,292
- 2.159,714
- 3.293,014
- 4.41,785
- 5.314,236
- 6.85,901
- 7.18,361
- 8.82,940
- 9.218,781
- 10.189,046
- 11.512,988
- 12.247,890
The mistakes behind most wrong answers
A wrong answer in adding and taking away big numbers 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.
- 926,349−657,784=?
The answer is 268,565. A child who answers 268,566 probably counted one too many or too few.
- 211,783−23,755=?
The answer is 188,028. A child who answers 235,538 probably added instead of taking away.
- 986,346−324,873=?
The answer is 661,473. A child who answers 324,873 probably answered with one of the numbers shown.
- 86,384+13,237=?
The answer is 99,621. A child who answers 73,147 probably took away instead of adding.
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.