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Math 4 · Unit 13: Addition and subtraction · Cambridge Primary Maths Stage 4

13.1 Adding and subtracting efficiently

17 questions · e.g. 649 people go to a concert …

Practice

Questions

  1. 1. Worked example: work out 367 + 185.

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  2. 2. There are 215 girls and 259 boys in the school hall. How many boys and girls are in the hall altogether?

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  3. 3. Write an estimate for 128 − 62 (round each number to the nearest 10), then find the answer.

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  4. 4. Do the same for 358 − 254: write an estimate, then find the answer.

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  5. 5. Do the same for 548 − 392: write an estimate, then find the answer.

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  6. 6. Chloe has three digit cards: 3, 4 and 9. She makes the largest number she can with the three cards, then the smallest number she can. What is the difference between the two numbers?

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  7. 7. 649 people go to a concert. 290 people are women. 312 people are men. How many children are at the concert?

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  8. 8. The distance table shows Birmingham to Manchester is 127 km and Manchester to Newcastle is 212 km. Nami travels from Birmingham to Manchester and then from Manchester to Newcastle. How many kilometres does she travel altogether?

    kmBirminghamCardiffLondonManchesterNewcastleBirmingham179188127334Cardiff179269278489London188269298441Manchester127278298212Newcastle334489441212
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  9. 9. The distance table shows London to Birmingham is 188 km and Birmingham to Newcastle is 334 km. Raphael travels from London to Birmingham and then from Birmingham to Newcastle. How many kilometres does he travel altogether?

    kmBirminghamCardiffLondonManchesterNewcastleBirmingham179188127334Cardiff179269278489London188269298441Manchester127278298212Newcastle334489441212
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  10. 10. Subtract the largest 2-digit number from 200.

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  11. 11. Use only the digits 4 and 5 to complete this calculation (you may use the digits more than once). Which one works?

    += 500
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  12. 12. Darius spilt ink on his work: 732 − 3☐9 = 413. His answer is correct. What is the missing digit?

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  13. 13. Write the missing digits: drag a digit into each empty square.

    +5919342

    Fill the blanks with these.

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  14. 14. Use each of the digits 4, 5, 6, 7, 8, 9 in each calculation to make these number sentences true. Which pair works?

    −= 333−= 111
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  15. 15. What total closest to 800 can you make using two of these numbers? 605, 402, 503, 789, 395, 899, 901, 197

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  16. 16. Last year there were 82 girls and 93 boys in Year 4. This year there are 190 students in Year 4. Of these students, 95 are boys. How many more girls are in Year 4 this year than last year?

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  17. 17. Find pairs of numbers that add up to 900. (One is done for you: 672 + 228 = 900.) Match each number to its partner.

    • 545
    • 791
    • 86
    • 463
    • 437
    • 814
    • 355
    • 109
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