Addition
ICSE · Class 4 · Mathematics
Most important questions from Addition for ICSE Class 4 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Find the sum: 8,46,817 + 6,32,381 + 3,26,781
Show answer
18,05,979
Step 1: Arrange all three numbers in columns carefully. Step 2: Add ones: 7+1+1=9. Add tens: 1+8+8=17, write 7 carry 1. Add hundreds: 8+3+7+1=19, write 9 carry 1. Step 3: Add thousands: 6+2+6+1=15, write 5 carry 1. Add ten-thousands: 4+3+2+1=10, write 0 carry 1. Step 4: Add lakhs: 8+6+3+1=18, write 8 carry 1. Add ten-lakhs: 1, write 1. Final answer: 18,05,979. Always check carry-overs carefully!
In a school, 1,26,844 students attended on Monday and 3,52,188 students attended on Tuesday. What is the total attendance for both days?
Show answer
4,79,032
Step 1: Total attendance = Monday attendance + Tuesday attendance. Step 2: 1,26,844 + 3,52,188 Step 3: Add column by column: 4+8=12 (write 2 carry 1), 4+8+1=13 (write 3 carry 1), 8+1+1=10 (write 0 carry 1), 6+2+1=9, 2+5=7, 1+3=4. Step 4: Total = 4,79,032. Verify: The answer should be between 4 lakh and 5 lakh since we are adding about 1.27 lakh and 3.52 lakh.
What is the sum of the largest 4-digit number and the smallest 5-digit number?
Show answer
19,999
Step 1: Find the largest 4-digit number = 9,999. Step 2: Find the smallest 5-digit number = 10,000. Step 3: Add them: 9,999 + 10,000 = 19,999. Step 4: Check - 9,999 + 10,000: add ones 9+0=9, tens 9+0=9, hundreds 9+0=9, thousands 9+0=9, ten-thousands 0+1=1. Answer = 19,999. Common mistake: Some students think the largest 4-digit number is 10,000 - remember it's 9,999!
Which number should be added to 4,85,319 to get 7,00,000?
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2,14,681
Step 1: We need to find: 4,85,319 + ? = 7,00,000. Step 2: This means ? = 7,00,000 - 4,85,319. Step 3: 7,00,000 - 4,85,319 = 2,14,681. Step 4: Verify by adding: 4,85,319 + 2,14,681: 9+1=10 (carry 1), 1+8+1=10 (carry 1), 3+6+1=10 (carry 1), 5+4+1=10 (carry 1), 8+1+1=10 (carry 1), 4+2+1=7. Answer = 7,00,000. Correct!
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