Spectrum Math Grade 1 Chapter 2 Pretest Answer Key

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Spectrum Math Grade 1 Chapter 2 Pretest Answers Key

Complete.

1.
___ tens ___ ones = _____
Answer:

3 tens 6 ones = 36.

Explanation:
Number of tens = (10 × 3) = 30.
Number of ones = (1 × 6) = 6.
Total = Number of tens + Number of ones
= 30 + 6
= 36.

2.
___ tens ___ ones = _____
Answer:

6 tens 2 ones = 62.

Explanation:
Number of tens = (10 × 6) = 60.
Number of ones = (1 × 2) = 2.
Total = Number of tens + Number of ones
= 60 + 2
= 62.

3.
___ tens ___ ones = _____
Answer:

4 tens 1 ones = 41.

Explanation:
Number of tens = (10 × 4) = 40.
Number of ones = (1 × 1) = 1.
Total = Number of tens + Number of ones
= 40 + 1
= 41.

4.
___ tens ___ ones = _____
Answer:

1 tens 2 ones = 12.

Explanation:
Number of tens = (10 × 1) = 10.
Number of ones = (1 × 2) = 2.
Total = Number of tens + Number of ones
= 10 + 2
= 12.

Complete.

5. 9 tens 6 ones = _____
Answer:
9 tens 6 ones = 96.

Explanation:
Number of tens = (10 × 9) = 90.
Number of ones = (1 × 6) = 6.
Total = Number of tens + Number of ones
= 90 + 6
= 96.

6. 8 tens 4 ones = ____
Answer:
8 tens 4 ones = 84.

Explanation:
Number of tens = (10 × 8) = 80.
Number of ones = (1 × 4) = 4.
Total = Number of tens + Number of ones
= 80 + 4
= 84.

7. 6 tens 3 ones = _____
Answer:
6 tens 3 ones = 63.

Explanation:
Number of tens = (10 × 6) = 60.
Number of ones = (1 × 3) = 3.
Total = Number of tens + Number of ones
= 60 + 3
= 63.

8. 5 tens 7 ones = _____
Answer:
5 tens 7 ones = 57.

Explanation:
Number of tens = (10 × 5) = 50.
Number of ones = (1 × 7) = 7.
Total = Number of tens + Number of ones
= 50 + 7
= 57.

9. 2 tens 0 ones = _____
Answer:
2 tens 0 ones = 20.

Explanation:
Number of tens = (10 × 2) = 20.
Number of ones = (1 × 0) = 0.
Total = Number of tens + Number of ones
= 20 + 0
= 20.

10. 7 tens 8 ones = _____
Answer:
7 tens 8 ones = 78.

Explanation:
Number of tens = (10 × 7) = 70.
Number of ones = (1 × 8) = 8.
Total = Number of tens + Number of ones
= 70 + 8
= 78.

11. 4 tens 9 ones = ____
Answer:
4 tens 9 ones = 49.

Explanation:
Number of tens = (10 × 4) = 40.
Number of ones = (1 × 9) = 9.
Total = Number of tens + Number of ones
= 40 + 9
= 49.

12. 1 tens 6 ones = ____
Answer:
1 tens 6 ones = 16.

Explanation:
Number of tens = (10 × 1) = 10.
Number of ones = (1 × 6) = 6.
Total = Number of tens + Number of ones
= 10 + 6
= 16.

13. 3 tens 4 ones = _____
Answer:
3 tens 4 ones = 34.

Explanation:
Number of tens = (10 × 3) = 30.
Number of ones = (1 × 4) = 4.
Total = Number of tens + Number of ones
= 30 + 4
= 34.

14. 8 tens 1 one = _____
Answer:
8 tens 1 one = 81.

Explanation:
Number of tens = (10 × 8) = 80.
Number of ones = (1 × 1) = 1.
Total = Number of tens + Number of ones
= 80 + 1
= 81.

Count forward. Write the missing numbers.

15. 23, 24, ___, 26, 27, ____, 29, ____, ____, 32, 33, 34
Answer:
23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34.

Explanation:
Missing number pattern:
Difference between the numbers – 1.
23, 24, 24 + 1 = 25, 26, 27, 27 + 1 = 28, 29, 29 + 1 = 30, 30 + 1 = 31, 32, 33, 34.

16. 72, ____, 74, 75, 76, ___, 78, 79, ____, 81, 82, 83, ____
Answer:
72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84.

Explanation:
Missing number pattern:
Difference between the numbers – 1.
=> 72, 72 + 1 = 73, 74, 75, 76, 76 + 1 = 77, 78, 79, 79 + 1 = 80, 81, 82, 83, 83 + 1 = 84.

17. 100, 101, ____, 103, 104, 105, ____, 107, 108, ____, 110
Answer:
100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110.

Explanation:
Missing number pattern:
Difference between the numbers – 1.
=> 100, 101, 101 + 1 = 102, 103, 104, 105, 105 + 1 = 106, 107, 108, 108 + 1 = 109, 110.

18. 47, 48, 49, ____, _____, ____, 53, 54, ____, 56, 57, 58
Answer:
47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58.

Explanation:
Missing number pattern:
Difference between the numbers – 1.
=> 47, 48, 49, 49 + 1 = 50, 50 + 1 = 51, 51 + 1 = 52, 53, 54, 54 + 1 = 55, 56, 57, 58.

19. 112, ____, ____, ____, 116, 117, ____, ____, ____
Answer:
112, 113, 114, 115, 116, 117, 118, 119, 120.

Explanation:
Missing number pattern:
Difference between the numbers – 1.
=> 112, 112 + 1 = 113, 113 + 1 = 114, 114 + 1 = 115, 116, 117, 117 + 1 = 118, 118 + 1 = 119, 119 + 1 = 120.

20. 10, 20, ____, 4o, ____, 60, 70, 80, ____, ____, ____, 120
Answer:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120.

Explanation:
Missing number pattern:
Difference between the numbers – 10.
=> 10, 20, 20 + 10 = 30, 40, 40 + 10 = 50, 60, 70, 80, 80 + 10 = 90, 90 + 10 = 100, 100 + 10 = 110, 120.

Write > , <, or = to make the following statements true.

21. 40 37
Answer:
40 > 37.

Explanation:
40 – Big number.
37 – Small number.
=> 40 is greater than 37.

22. 55 35
Answer:
55 > 35.

Explanation:
55 – Big number.
35 – Small number.
=> 55 is greater than 35.

23. 22 44
Answer:
22 < 44.

Explanation:
22 – Small number.
44 – Big number.
=> 22 is lesser than 44.

24. 14 32
Answer:
14 < 32.

Explanation:
14 – Small number.
32 – Big number.
=> 14 is lesser than 32.

25. 59 39
Answer:
59 > 39.

Explanation:
59 – Big number.
39 – Small number.
=> 59 is greater than 39.

26. 52 21
Answer:
52 > 21.

Explanation:
52 – Big number.
21 – Small number.
=> 52 is greater than 21.

27. 77 77
Answer:
77 = 77.

Explanation:
77 – Same number.
77 – Same number.
=> 77 is equal to  77.

28. 38 27
Answer:
38 > 27.

Explanation:
38 – Big number.
27 – Small number.
=> 38 is greater than 27.

29. 85 88
Answer:
85 < 88.

Explanation:
85 – Small number.
88 – Big number.
=> 85 is lesser than 88.

30. 30 20
Answer:
30 > 20.

Explanation:
30 – Big number.
20 – Small number.
=> 30 is greater than 20.

31. 43 76
Answer:
43 < 76.

Explanation:
43 – Small number.
76 – Big number.
=> 43 is lesser than 76.

32. 36 26
Answer:
36 > 26.

Explanation:
36 – Big number.
26 – Small number.
=> 36 is greater than 26.

33. 18 70
Answer:
18 < 70.

Explanation:
18 – Small number.
70 – Big number.
=> 18 is lesser than 70.

34. 9 34
Answer:
9 < 34.

Explanation:
9 – Small number.
34 – Big number.
=> 9  is lesser than 34.

35. 71 75
Answer:
71 < 75.

Explanation:
71 – Small number.
75 – Big number.
=> 71 is lesser than 75.

36. 65 76
Answer:
65 < 76.

Explanation:
65 – Small number.
76 – Big number.
=> 65 is lesser than 76.

37. 29 19
Answer:
29 > 19.

Explanation:
29 – Big number.
19 – Small number.
=> 29 is greater than 19.

38. 64 8
Answer:
64 > 8.

Explanation:
64 – Big number.
8 – Small number.
=> 64 is greater than 8.