Singapore Math Level 3A & 3B – Unit 1: NUMBERS 1–10,000 - 61 Questions
Unit 1: NUMBERS 1–10,000
Q(1-5): Write the following words as numbers.
1. three thousand, six hundred twenty-five
2. nine thousand, ninety-nine
3. six thousand, two hundred eight
4. five thousand, eight hundred seventeen
5. eight thousand, thirty-five
Solution(1-5):
1. 3,625
2. 9,099
3. 6,208
4. 5,817
5. 8,035
Q(6-10): Write the following numbers as words on the lines.
6. 9693
7. 4313
8. 8440
9. 7015
10. 6505
Solution(6-10):
6. nine thousand, six hundred ninety-three
7. four thousand, three hundred thirteen
8. eight thousand, four hundred forty
9. seven thousand, fifteen
10. six thousand, five hundred five
Q(11-15): Count the numbers by tens, hundreds, or thousands. Write the correct answer in each blank.
11. 8050, 8060, ____, 8080, ____.
12. 2111, ____, 2311, ____, 2511
13. 3593, 4593, ____, 6593, ____.
14. 1999, ____, 2199, 2299, ____.
15. 7080, ____, 7100, ____, 7120
Solution(11-15):
11. 8,070, 8,090
[8,060 – 8,050 = 10;
8,060 + 10 = 8,070;
8,080 + 10 = 8,090]
12. 2,211, 2,411
[2,111 + 100 = 2,211
2,311 + 100 = 2,411]
13. 5,593, 7,593
[4,593 – 3,593 = 1,000;
4,593 + 1,000 = 5,593;
6,593 + 1,000 = 7,593]
14. 2099, 2399
[2,299 – 2,199 = 100;
1,999 + 100 = 2,099;
2,299 + 100 = 2,399]
15. 7,090, 7,110
[7,080 + 10 = 7,090;
7,100 + 10 = 7,110]
Q(16-24): Fill in each blank with the correct answer.
16. 3740 = ____ thousand ____ hundreds ____ tens ____ ones
17. 9361 = ____thousands ____hundreds ____tens ____one
18. 7001 = ____thousands____hundreds____tens____one
19. 6384 = ____+____+_____+____
20. 1072 = _____+____+_____+____
21. 4951 = ____+____+_____+_____
22. 5818 = 5000 + ______ + 10 + 8
23. 2756 = _______ + 700 + 50 + 6
24. 8668 = 800 + ____+60 + 8
Solution(16-24):
16. 3, 7, 4, 0
17. 9, 3, 6, 1
18. 7, 0, 0, 1
19. 6,000, 300, 80, 4
20. 1,000, 0, 70, 2
21. 4,000, 900, 50, 1
22. 800
23. 2,000
24. 600
25. In 1540,
(a) the digit ……... is in the ones place.
(b) the digit 1 is in the ……. place.
(c) the value of the digit 5 is……....
(d) the value of the digit ………. is 40.
Solution(25):
(a) 0
(b) thousands
(c) 500
(d) 4
26. In 8429,
(a) the digit ……. is in the ones place.
(b) the digit 9 is in the ………. place.
(c) the value of the digit 2 is ……...
(d) the value of the digit …….. is 8000.
Solution(26):
(a) 4
(b) ones
(c) 20
(d) 8
27. In 5741,
(a) the digit …….. is in the thousands place.
(b) the digit 4 is in the………...place.
(c) the value of the digit 7 is……....
(d) the value of the digit ………... is 1.
Solution(27):
(a) 5
(b) tens
(c) 700
(d) 1
Q(28-30): Find the smaller number in each pair.
28. 6447 6474
29. 1704 1047
30. 4196 8196
Solution(28-30):
28. 6,447
29. 1,047
30. 4,196
Q(31-33): Find the larger number in each pair.
31. 6,456 6,656
32. 8,294 8,942
33. 3,010 3,001
Solution(31-33):
31. 6,656
32. 8,942
33. 3,010
Q(34-36): Find the largest number in each set.
34. 4,614 4,216 4,461
35. 9,909 9,999 9,099
36. 5,115 5,515 5,551
Solution(34-36):
34. 4,614
35. 9,999
36. 5,551
Q(37-39): Circle the smallest number in each set.
37. 8,624 2,468 2,648
38. 3,829 3,920 9,833
39. 5,625 6,250 2,056
Solution(37-39):
37. 2,468
38. 3,829
39. 2,056
Q(40-44): Fill in each blank with greater or smaller.
40. 1,068 is ………. than 1,168.
41. 8,843 is ……. than 8,803.
42. 7,452 is ……. than 5,252.
43. 3,090 is …….. than 309.
44. 4,234 is ……… than 4,324.
Solution(40-44):
40. smaller
41. greater
42. greater
43. greater
44. smaller
Q(45-49): Complete the number patterns.
45. 1,540, 1,545,___,_____, 1,560
46. 4,869, ____, 4,669, 4,569, ______
47. 2,330, 2,340, ____, 2,360, _____
48. 8,719, ____,______, 5,719, 4,719
49. 5,876, 5,886, _____,___, 5,916
Solution(45-49):
45. 1,550, 1,555
[1,545 – 1,540 = 5;
1,545 + 5 = 1,550;
1,550 + 5 = 1,555]
46. 4,769, 4,469
[4,669 – 4,569 = 100;
4,869 – 100 = 4,769;
4,569 – 100 = 4,469]
47. 2,350, 2,370
[2,340 – 2,330 = 10;
2,340 + 10 = 2,350;
2,360 + 10 = 2,370]
48. 7,719, 6,719
[5,719 – 4,719 = 1,000;
8,719 – 1,000 = 7,719;
7,719 – 1,000 = 6,719]
49. 5,896, 5,906
[5,886 – 5,876 = 10;
5,886 + 10 = 5,896;
5,896 + 10 = 5,906]
Q(50-54): Arrange the following numbers in order. Begin with the largest.
50. 3619, 6193, 1936, 9316
51. 5805, 5508, 5850, 5058
52. 9396, 6939, 3699, 9963
53. 4120, 2014, 4210, 2104
54. 6818, 6881, 8116, 8616
Solution(50-54):
50. 9,316, 6,193, 3,619, 1,936
51. 5,850, 5,805, 5,508, 5,058
52. 9,963, 9,396, 6,939, 3,699
53. 4,210, 4,120, 2,104, 2,014
54. 8,616, 8,116, 6,881, 6,818
Q(55-59): Arrange the following numbers in order. Begin with the smallest.
55. 2424, 8424, 4424, 1424
56. 8011, 8101, 8001, 8118
57. 5240, 4025, 5045, 4520
58. 6339, 6933, 3693, 3369
59. 4916, 4169, 4691, 4619
Solution(55-59):
55. 1,424, 2,424, 4,424, 8,424
56. 8,001, 8,011, 8,101, 8,118
57. 4,025, 4,520, 5,045, 5,240
58. 3,369, 3,693, 6,339, 6,933
59. 4,169, 4,619, 4,691, 4,916
60. Write the largest 4-digit number by using the digits 6, 2, 8, and 1?
Solution(60):
8 > 6 > 2 > 1
The largest number: 8621
61. Write the smallest 4-digit number by using the digits 9, 3, 5, and 7?
Solution(61):
3 < 5 < 7 < 9
The smallest number: 3579
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