All the solutions provided in McGraw Hill Math Grade 5 Answer Key PDF Chapter 2 Test are as per the latest syllabus guidelines.

Question 1.
322 + 353 = ______________________
322 + 353 = 675.

Explanation:
Sum of 322 and 353:
322 + 353 = 675.

Question 2.
75 + 176 + 25 = ______
75 + 176 + 25 = 276.

Explanation:
Sum of 75, 176 and 25:
75 + 176 + 25 = 276.

Question 3.
42 + 34 = _______________________
34 + 42 = _______________________
42 + 34 = 76.
34 + 42 = 76.

Explanation:
Sum of 42 and 34; 34 + 42:
42 + 34 = 76.
34 + 42 = 76.

Question 4.
18.54 + 38.35 = _______________________
18.54 + 38.35 = 56.89.

Explanation:
Sum of 18.54 and 38.35:
18.54 + 38.35 = 56.89.

Question 5.
529 – 87 = 442
442 + 87 = _______________________
529 – 87 = 442
442 + 87 = 529.

Explanation:
Sum of 442 and 87:
529 – 87 = 442
=> 442 + 87 = 529.

Question 6.
456 + 247 = ______
456 + 247 = 703.

Explanation:
Sum of 456 and 247:
456 + 247 = 703.

Question 7.
396 + 700 + 70 = ____
396 + 700 + 70 = 1,166.

Explanation:
Sum of 396, 700 and 70:
396 + 700 + 70 = 1,166.

Question 8.
564 + 374 = 938
374 + 564 = _____
564 + 374 = 938
374 + 564 = 938.

Explanation:
Sum of 564 and 374:
374 + 564 = 938.

Question 9.
4.93 + 27.5 + 61.04 = ____
4.93 + 27.5 + 61.04 = 93.47.

Explanation:
Sum of 4.93, 27.5 and 61.04:
4.93 + 27.5 + 61.04 = 93.47.

Question 10.
890 – 255 = 635
635 + 255 = ______
635 + 255 = 890.

Explanation:
Sum of 635 and 255:
890 – 255 = 635
=> 635 + 255 = 890.

Question 11.
7.34 + 0.57 + 4.56 = _________
7.34 + 0.57 + 4.56 = 12.47.

Explanation:
Sum of 7.34, 0.57 and 4.56:
7.34 + 0.57 + 4.56 = 12.47.

Question 12.
57.79 + 10.21 + 82.5 = _____
57.79 + 10.21 + 82.5 = 150.50.

Explanation:
Sum of 57.79, 10.21 and 82.5:
57.79 + 10.21 + 82.5 =150.50.

Add. Tell which strategy you used. Explain why you used it.
Question 13.
74.24 + 14.06 = ________
Which strategy did you choose? _________________________________________
Why? ___________
74.24 + 14.06 = 88.30.

Explanation:
Strategy used is addition because to find the sum of 74.24 and 14.06.
74.24 + 14.06 = 88.30.

Subtract.
Question 14.
584 – 273 ____
584 – 273 = 311.

Explanation:
Difference  between 584 and 273:
584 – 273 = 311.

Question 15.
24.74 – 10.13 _____
24.74 – 10.13 = 14.61.

Explanation:
Difference  between 24.74 and 10.13:
24.74 – 10.13 = 14.61.

Question 16.
375.07 – 88.12 ____
375.07 – 88.12 = 286.95.

Explanation:
Difference  between 375.07 and 88.12:
375.07 – 88.12 = 286.95.

Question 17.
208 – 53 _____
208 – 53 = 155.

Explanation:
Difference  between 208 and 53:
208 – 53 = 155.

Question 18.
67.21 – 25.9 ____
67.21 – 25.9 = 41.31.

Explanation:
Difference  between 67.21 and  25.9:
67.21 – 25.9 = 41.31.

Question 19.
864.23 – 298.27 ____
864.23 – 298.27 = 565.96.

Explanation:
Difference  between 864.23 and 298.27:
864.23 – 298.27 = 565.96.

Subtract.
Question 20.
16.3 – 6.2 = ____
16.3 – 6.2 = 10.1.

Explanation:
Difference between 16.3 and 6.2:
16.3 – 6.2 = 10.1.

Question 21.
86.57 – 21.82 = ____
86.57 – 21.82 = 64.75.

Explanation:
Difference between 86.57 and 21.82:
86.57 – 21.82 = 64.75.

Subtract. Tell which strategy you used. Explain why you used it.
Question 22.
65.90 – 30.50 = ____
Which strategy did you choose? ______
Why? ______
65.90 – 30.50 = 35.40.

Explanation:
Strategy used is subtraction because to find the difference between 65.90 and 30.50.
65.90 – 30.50 = 35.40.

Solve.
Question 23.
The Ruiz family, 2 adults and 2 children, visit the science museum. The Brinker family, 1 adult and 3 children, visit the zoo. Each family has $60.00 to spend on admission. Which family will spend less on admission? Answer: The Brinker family will spend less on admission. Explanation: Cost of adult admission for visit the science museum =$15.00
Cost of children admission for visit the science museum = $10.00 Number of adults in Ruiz family for visit the science museum = 2. Number of children in Ruiz family for visit the science museum = 2. Total cost for admission for visit the science museum of Ruiz family = (Cost of adult admission for visit the science museum × Cost of adult admission for visit the science museum) + (Number of children in Ruiz family for visit the science museum × Cost of children admission for visit the science museum) = (2 ×$15) + (2 × $10) =$30 + $20 =$50.
Cost of adult admission for visit the zoo = $13.50. Cost of children admission for visit the zoo =$9.50.
Number of adults in Brinker family for visit the zoo = 1.
Number of children in Brinker family for visit the zoo = 3.
Total cost for admission for visit the zoo of Brinker family = (Cost of adult admission for visit the zoo × Number of adults in Brinker family for visit the zoo) + (Cost of children admission for visit the zoo × Number of children in Brinker family for visit the zoo)
= (1 × $13.50) + (2 ×$9.50)
= $13.50 +$19.00
= $32.50. Each family has$60.00 to spend on admission.
Comparison:
Total cost for admission for visit the science museum of Ruiz family = $50. Total cost for admission for visit the zoo of Brinker family =$32.50.
Difference:
$60 –$50 = $10.$60 – $32.50 =$27.50.

Question 24.
A bird-watcher measured the heart rate of a blue-throated hummingbird at 1,260 beats per minute. She read that an inactive hummingbird may have a heart rate as low as 50 beats per minute. What is the difference between these heart rates?