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Daniel Math Academy · Grade 4 Math

Add & Subtract Patterns

Skill X.1 · Patterns · ★★☆ Medium · Quarter 1

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Score/ 16

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Find the rule and fill in the missing numbers.

1. 1
   $73,70,67,\boxed{},61,\boxed{}$
2. 2
   $79,68,57,\boxed{},\boxed{},24$
3. 3
   $20,25,30,\boxed{},\boxed{},45$
4. 4
   $100,88,76,\boxed{},\boxed{},40$
5. 5
   $46,48,50,52,\boxed{},\boxed{}$
6. 6
   $79,71,63,\boxed{},\boxed{},39$
7. 7
   $57,52,\boxed{},\boxed{},37,32$
8. 8
   $96,84,72,60,\boxed{},\boxed{}$
9. 9
   $108,97,\boxed{},75,64,\boxed{}$
10. 10
    $76,67,\boxed{},49,\boxed{},31$
11. 11
    $33,31,\boxed{},27,\boxed{},23$
12. 12
    $50,59,68,77,\boxed{},\boxed{}$
13. 13
    $65,54,\boxed{},32,\boxed{},10$
14. 14
    $7,18,\boxed{},40,51,\boxed{}$
15. 15
    $36,30,24,\boxed{},\boxed{},6$
16. 16
    $71,61,\boxed{},41,31,\boxed{}$

Daniel Math Academy · Grade 4 Math

Answer Key

X.1 Add & Subtract Patterns · ★★☆ Medium

1. 1$64,58$ (subtract 3)
2. 2$46,35$ (subtract 11)
3. 3$35,40$ (add 5)
4. 4$64,52$ (subtract 12)
5. 5$54,56$ (add 2)
6. 6$55,47$ (subtract 8)
7. 7$47,42$ (subtract 5)
8. 8$48,36$ (subtract 12)
9. 9$86,53$ (subtract 11)
10. 10$58,40$ (subtract 9)
11. 11$29,25$ (subtract 2)
12. 12$86,95$ (add 9)
13. 13$43,21$ (subtract 11)
14. 14$29,62$ (add 11)
15. 15$18,12$ (subtract 6)
16. 16$51,21$ (subtract 10)