Let's solve each problem step by step:
---
Problem 1: Round 77 to the nearest ten.
-
Step 1: Identify the number we are rounding: 77.
-
Step 2: Determine the nearest tens: The tens closest to 77 are 70 and 80.
-
Step 3: Look at the digit in the ones place (the last digit): In 77, the ones digit is 7.
-
Step 4: Apply the rounding rule:
- If the ones digit is 5 or greater, round up.
- If the ones digit is less than 5, round down.
- Since the ones digit is 7 (which is greater than 5), we round up.
-
Step 5: Round 77 up to the next ten, which is 80.
Answer: 80
---
Problem 2: Where is the star?
-
Step 1: Observe the grid provided in the image.
-
Step 2: Identify the coordinates of the star:
- The star is located at the intersection of the horizontal line labeled "3" and the vertical line labeled "2."
-
Step 3: Write the coordinates as an ordered pair (x, y), where x is the horizontal position and y is the vertical position.
- Here, x = 3 and y = 2.
Answer: (3, 2)
---
Problem 3: Which weighs more, 6000 grams or 5 kilograms?
-
Step 1: Convert both weights to the same unit for comparison. Let's convert kilograms to grams since 1 kilogram = 1000 grams.
-
Step 2: Convert 5 kilograms to grams:
\[
5 \text{ kilograms} = 5 \times 1000 = 5000 \text{ grams}
\]
-
Step 3: Compare the two weights:
- 6000 grams
- 5000 grams
-
Step 4: Determine which is larger:
- 6000 grams > 5000 grams
Answer: 6000 grams
---
Problem 4: What fraction of the stars are white?
-
Step 1: Count the total number of stars:
- There are 8 stars in total.
-
Step 2: Count the number of white stars:
- There are 2 white stars.
-
Step 3: Write the fraction of white stars:
- The fraction is the number of white stars divided by the total number of stars:
\[
\frac{\text{Number of white stars}}{\text{Total number of stars}} = \frac{2}{8}
\]
-
Step 4: Simplify the fraction:
- Both the numerator (2) and the denominator (8) can be divided by 2:
\[
\frac{2}{8} = \frac{1}{4}
\]
Answer: \(\frac{1}{4}\)
---
Final Answers:
1.
80
2.
(3, 2)
3.
6000 grams
4.
\(\frac{1}{4}\)
Boxed Final Answer:
\[
\boxed{80, (3, 2), 6000 \text{ grams}, \frac{1}{4}}
\]
Parent Tip: Review the logic above to help your child master the concept of 2nd grade math practice sheets.
