All the solutions provided in McGraw Hill Math Grade 2 Answer Key PDF Chapter 5 Lesson 6 Count by 5s, 10s, and 100s will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 2 Answer Key Chapter 5 Lesson 6 Count by 5s, 10s, and 100s
Explore and Explain
Teacher Directions: Skip count by 5. Color those numbers yellow. Skip count by 10. Circle those numbers red. If the chart continued, and you counted by hundreds, what would be the next number you would say?
See and Show
Helpful hint
Patterns can also be 5 less, 10 less, or 100 less.
Number patterns can help you count. In these patterns each number is more.
Coun by fives. Each number is 5 more
Coun by tens. Each number is 10 more
Coun by hundreds. Each number is 100 more
Write the missing numbers. Then write the counting pattern.
Question 1.
340, 350, 360, ____, 380
The pattern is ________
Answer:
340, 350, 360, 370, 380
The pattern is counted by 10.
Explanation:
Given that the pattern is 340, 350, and 360, so the next number will be 370. As the pattern follows count by 10 as each number 10 more.
Question 2.
575, 580, _____, 590, _____
The pattern is ________
Answer:
575, 580, 585, 590, and 595.
The pattern is counted by 5
Explanation:
The pattern is 575, 580, 585, 590, and 595. As the pattern follows count by 5 as each number is 5 more.
Question 3.
941, 841, ____, 641, 541
The pattern is ________
Answer:
941, 841, 741, 641, 541.
The pattern is counted by 100.
Explanation:
The pattern is 941, 841, 741, 641, and 541. The pattern follows count by 100 as each number is 100 less.
Question 4.
680, 675, ____, ____, 660
The pattern is ________
Answer:
680, 675, 670, 665, and 660.
The pattern is counted by 5.
Explanation:
The pattern is 680, 675, 670, 665, and 660. The pattern follows count by 5 as each number is 5 less.
Talk Math How can you tell if a number pattern is counting by hundreds?
On My Own
Write the missing numbers. Then write the counting pattern.
Question 5.
500, 510, ___, 530, ____
The pattern is _____
Answer:
500, 510, 520, 530, 540.
The pattern is counted by 10.
Explanation:
The missing numbers are 520 and 540. As the pattern follows count by 10 and each number was added to 10.
Question 6.
310, ____, 320, ___, 330
The pattern is _____
Answer:
310, 315, 320, 325, 330.
The pattern is counted by 5.
Explanation:
The missing numbers are 315 and 325. As the pattern follows count by 5 and each number was added to 5.
Question 7.
800, 790, 780, ___, 760
The pattern is _____
Answer:
800, 790, 780, 770, 760.
The pattern is counted by 10.
Explanation:
The missing numbers are 770. As the pattern follows count by 10 and each number was less than 10.
Question 8.
655, ____, 455, 355, _____
The pattern is _____
Answer:
655, 555, 455, 355, 255.
The pattern is counted by 100.
Explanation:
The missing numbers are 555 and 255. As the pattern follows count by 100 and each number was less than 100.
Question 9.
____, 486, 586, 686, ____
The pattern is _____
Answer:
386, 486, 586, 686, 786.
The pattern is counted by 100.
Explanation:
The missing numbers are 386 and 786. As the pattern follows count by 100 and each number was added to 100.
Question 10.
500, 600, 700, ___, 900
The pattern is _____
Answer:
500, 600, 700, 800, 900.
The pattern is counted by 100.
Explanation:
The missing number is 800. As the pattern follows count by 100 and each number was added to 100.
Question 11.
234, ____, ___, 264, 274
The pattern is _____
Answer:
234, 244, 254, 264, 274.
The pattern is counted by 10.
Explanation:
The missing numbers are 234 and 254. As the pattern follows count by 10 and each number was added to 10.
Question 12.
____, 515, 510, 505, ____
The pattern is _____
Answer:
520, 515, 510, 505, 500.
Explanation:
The missing numbers are 520 and 500. As the pattern follows count by 5 and each number was less than 5.
Problem Solving
Question 13.
Paul counts by hundreds. He starts with the number 123. Write the numbers Paul counts.
123, ___, ____, ___, ___, _____
Answer:
The numbers Paul counts are 123, 223, 323, 423, 523, and 623.
Explanation:
Given that Paul counts by hundreds and he starts with the number 123. The numbers Paul counts are 123, 223, 323, 423, 523, and 623.
Question 14.
Ali counts by tens. She starts with 325. AN counts 325, 335, 345, 365, 385. What numbers did Alii leave out?
_____ and _____
Answer:
Ali leave out 355 and 375.
Explanation:
Given that Ali counts by tens and she starts with 325 then counts 325, 335, 345, 365, 385. So the missing digits are 355 and 375. After 345 by adding 10 we will get 355 and after 365 by adding 10 we will get 375.
Question 15.
Write the numbers you would say if you count backwards by fives. Start with 230 and end at 200.
230, ___, _____, ___, ___, ____, 200
Answer:
230, 225, 220, 215, 210, 205, 200.
Explanation:
Counting backwards by fives from 230 we will get 230, 225, 220, 215, 210, 205, 200.
Write Math Felicia counts from 300 to 400. Would it be faster to count by 5s or by 10s?
Answer:
300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400.
Explanation:
The count from 300 to 400 by 10s is faster. As the pattern will be 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400.
McGraw Hill My Math Grade 2 Chapter 5 Lesson 6 My Homework Answer Key
Practice
Write the missing numbers. Then write the counting pattern.
Question 1.
1,000, 995, ____, 985, ____
The pattern is ____
Answer:
1,000, 995, 990, 985, 980.
The pattern is 5 less to each number.
Explanation:
The missing digits are 990 and 975. As the pattern is 5 less to each number.
Question 2.
524, ___, 544, 554, ____
The pattern is ____
Answer:
524, 534, 544, 554, 564.
The pattern adds 5 to each number.
Explanation:
The missing digits are 534 and 564. As the pattern adds 5 to each number.
Question 3.
___, 283, 383, ___, 583
The pattern is ____
Answer:
183, 283, 383, 483, 583.
The pattern adds 100 to each number.
Explanation:
The missing digits are 183 and 483. As the pattern adds 100 to each number.
Question 4.
___, 843, 743, 643, ____
The pattern is ____
Answer:
943, 843, 743, 643, 543.
The pattern is 100 less to each number.
Explanation:
The missing digits are 943 and 543. As the pattern is 100 less to each number.
Question 5.
420, 430, ___, 450, ___
The pattern is ____
Answer:
420, 430, 440, 450, 460.
The pattern adds 10 to each number.
Explanation:
The missing digits are 440 and 460. As the pattern adds 10 to each number.
Question 6.
525, ___, 535, ___, 545
The pattern is ____
Answer:
525, 530, 535, 540, 545.
The pattern adds 5 to each number.
Explanation:
The missing digits are 530 and 540. As the pattern adds 5 to each number.
Continue the counting pattern.
Question 7.
835, 840, 845, ___, ___, _____
Answer:
835, 840, 845, 850, 855, 860.
The pattern adds 5 to each number.
Explanation:
The counting pattern is 835, 840, 845, 850, 855, 860. As the pattern adds 5 to each number.
Question 8.
410, 420, 430, ___, ___, _____
Answer:
410, 420, 430, 440, 450, 460.
The pattern adds 10 to each number.
Explanation:
The counting pattern is 410, 420, 430, 440, 450, 460. As the pattern adds 10 to each number.
Question 9.
900, 800, 700, ___, ___, _____
Answer:
900, 800, 700, 600, 500, 400.
Explanation:
The counting pattern is 900, 800, 700, 600, 500, 400. As the pattern is 100 less to each number.
Question 10.
Shari counts: 169, 159, 149, 139, 129. Shari wants Miguel to guess her counting pattern. What should Miguel guess?
The pattern is _________________________
Answer:
The pattern is counted by 10 as each number is 10 less.
Explanation:
Given that Shari counts 169, 159, 149, 139, and 129 and Shari wants Miguel to guess her counting pattern. So the counting pattern is counted by 10 as each number is 10 less.
Test Practice
Question 11.
Mark the number pattern that shows 10 less.
(A) 820, 830, 840
(B) 980, 970, 960
(C) 923, 922, 921
(D) 400, 500, 600
Answer:
B.
Explanation:
The number that shows 10 less is 980, 970, and 960.
Math at Home Pick a three-digit number. Ask your child to count by ones, tens, and/or hundreds.
Answer:
420, 421, 422, 423, 424, and 425.
420, 430, 440, 450, and 460.
420, 520, 620, 720, and 820.
Explanation:
The three-digit number is 420. So the count by ones is 420, 421, 422, 423, 424, and 425.
The count by tens is 420, 430, 440, 450, and 460.
The count by hundreds is 420, 520, 620, 720, and 820.