Olibits / Math / Addition & Subtraction within 10,000
Primary 3 Math: Addition & Subtraction within 10,000 Practice
Real Primary 3 Math questions on Addition & Subtraction within 10,000, pulled directly from the Olibits question bank — the same questions a child would actually see, not separately written for this page.
MOE strand: Number and Algebra
Curriculum alignment
Mathematics Syllabus, Primary One to Six (MOE, 2021 syllabus)
Taught across P1–P6.
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Real Addition & Subtraction within 10,000 practice questions
What is 3,999 + 1? Use a mental strategy.
4000 ✓
3999
4001
3900
3,999 is 1 away from 4,000, so 3,999 + 1 = 4,000.
Which number sentence correctly shows how to check 7,342 - 2,158 = 5,184 using addition?
5,184 + 2,158 = 7,342 ✓
7,342 + 2,158 = 5,184
5,184 - 2,158 = 7,342
2,158 - 5,184 = 7,342
To check subtraction, add the answer back to the number subtracted: 5,184 + 2,158 = 7,342.
Estimate 4,875 + 3,120 by rounding each number to the nearest hundred. What is the estimated sum?
8,000 ✓
7,900
8,100
7,000
4,875 rounds to 4,900 and 3,120 rounds to 3,100, so 4,900 + 3,100 = 8,000.
Which pair of numbers has a sum of exactly 10,000?
6,275 and 3,725 ✓
5,500 and 4,600
7,200 and 2,900
8,050 and 1,850
6,275 + 3,725 = 10,000, the only pair that adds up exactly to 10,000.