Mental addition and subtraction

Year 5 · Free printable game: Secret code joke

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NC Y5 · CCSS 4.NBT.B.4
Name:Date:

Secret code joke

What room has no doors or windows?

Answer each question. Find the letter next to the right answer and write it in the box with the same number. The letters spell the punchline!

  1. 23,999 + 6,001V 380,000K 75,000G 73,000A 30,000
  2. 36,000 + 14,000Y 60,000C 30,000M 50,000H 75,000
  3. 45,000 − 2,000L 150,000R 30,000U 43,000I 50,000
  4. 99,999 + 1S 100,000Q 60,000L 75,000O 150,000
  5. 250,000 + 50,000J 380,000Z 100,000C 15,500H 300,000
  6. 147,000 + 3,000R 150,000I 99,999H 30,000G 75,000
  7. 12,500 + 3,000O 15,500F 150,000V 30,000H 55,000
  8. 100,000 − 1J 73,000G 15,500O 99,999Q 100,000
  9. 9,950 + 50E 150,000M 10,000N 55,000T 50,000
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Mental addition and subtraction

Year 5 · Worksheet

learnwith.games
NC Y5 · CCSS 4.NBT.B.4
Name:Date:

Draw a line to join each card to its partner.

73,400 − 400
60,000
100,000 − 1
99,999
45,000 − 2,000
43,000
500,000 − 120,000
380,000
61,200 − 1,200
30,000
23,999 + 6,001
73,000

12,500 + 3,000
50,000
250,000 + 50,000
150,000
147,000 + 3,000
300,000
99,999 + 1
15,500
68,000 + 7,000
75,000
36,000 + 14,000
100,000

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Mental addition and subtraction

Year 5 · Answer sheet

learnwith.games
NC Y5 · CCSS 4.NBT.B.4

Secret code joke

What room has no doors or windows? A MUSHROOM

1. 30,000 (A) · 2. 50,000 (M) · 3. 43,000 (U) · 4. 100,000 (S) · 5. 300,000 (H) · 6. 150,000 (R) · 7. 15,500 (O) · 8. 99,999 (O) · 9. 10,000 (M)

Worksheet

  1. 73,400 − 400 → 73,000
  2. 100,000 − 1 → 99,999
  3. 45,000 − 2,000 → 43,000
  4. 500,000 − 120,000 → 380,000
  5. 61,200 − 1,200 → 60,000
  6. 23,999 + 6,001 → 30,000
  7. 12,500 + 3,000 → 15,500
  8. 250,000 + 50,000 → 300,000
  9. 147,000 + 3,000 → 150,000
  10. 99,999 + 1 → 100,000
  11. 68,000 + 7,000 → 75,000
  12. 36,000 + 14,000 → 50,000

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