Go through the Spectrum Math Grade 2 Answer Key Chapter 1 Pretest and get the proper assistance needed during your homework.
Spectrum Math Grade 2 Chapter 1 Pretest Answers Key
Check What You Know
Understanding and Using Numbers
Write odd or even.
_________
Answer:
Explanation:
The total number of squares given is eight. Any number which is divisible by two is called an even number. The number eight is divisible by two and so the number of squares given are even.
_________
Answer:
Explanation:
The total number of triangles given is five. Any number which is not divisible by two is called an odd number. The number five is not divisible by two and so the number of triangles given are odd.
_________
Answer:
Explanation:
The total number of fish given is three. Any number which is not divisible by two is called an odd number. The number three is not divisible by two and so the number of fish given are odd.
_________
Answer:
Explanation:
The total number of ducks given is four. Any number which is divisible by two is called an even number. The number four is divisible by two and so the number of ducks given are even.
Write an equation to match the array.
_____ + _____ + _____ = ______
Answer:
Explanation:
The total number of base balls given in the first, second and third lines are respectively four each. To match the array, we need to add number of base balls in all rows which is equal to the total number of base balls given. The total number of base balls given are 12.
____ + ____ = _____
Answer:
Explanation:
The total number of stars given in the first and second lines are respectively five each. To match the array, we need to add number of stars in all rows which is equal to the total number of stars given. The total number of stars given are 10.
Write an equation to match the array.
____ + ____ + ____ + ____ = _____
Answer:
Explanation:
The total number of squares given in the first, second, third and fourth lines are respectively four each. To match the array, we need to add number of squares in all rows which is equal to the total number of squares given. The total number of squares given are 16.
____ + ____ + ____ =____
Answer:
Explanation:
The total number of apples given in the first line is three. To match the array, we need to add number of apples in the row which is equal to the total number of apples given. The total number of apples given are 3.
Count by 10.
10, ____, ___, 40, ____, _____
Answer:
Explanation:
First coin is given as 10. If we count by 10, then a 10 should be added to the first coin score to get the second coin which means 10+10=20. Similarly, for the third coin, we need to add one more 10 to the second coin score which means 20+10=30. It was given that the score of fourth coin is 40 which is expected. Now, for the fifth coin, we need to add 10 more to the score of fourth coin which means 40+10=50. In the same way, the score of sixth coin will be 50+10=60.
Count by 5.
5, ____, 15, _____, ____, _______
Answer:
Explanation:
First image is given as 5. If we count by 5, then a 5 should be added to the first image score to get the second image which means 5 + 5 =10. It was given that the score of third image is 15 which is expected. Similarly, for the fourth image, we need to add one more 5 to the third image score which means 15 + 5 = 20. Now, for the fifth image, we need to add 5 more to the score of fourth image which means 20 + 5 = 25. In the same way, the score of sixth image will be 25 + 5 = 30.
Count by 2. Write the missing numbers.
20, 22, ____, ____, 28, ___, ____, _____, 36
Answer:
20, 22, 24, 26, 28, 30, 32, 34, 36
Explanation:
The difference between the first and second number is 2. So, the third number is increased by 2 which means 22 + 2 = 24. The missing numbers in the given sequence are 24, 26, 30, 32, 34.