# Into Math Grade 2 Module 10 Lesson 1 Answer Key Use a Hundred Chart

We included HMH Into Math Grade 2 Answer Key PDF Module 10 Lesson 1 Use a Hundred Chart to make students experts in learning maths.

## HMH Into Math Grade 2 Module 10 Lesson 1 Answer Key Use a Hundred Chart

I Can add or subtract by counting counting back on a hundred chart.

How can you find how many more children are on the bus that Karen rides?  ____22_____ children
Karen and Pedro each ride a bus home from school. There are 46 children on Karen’s bus. There are 24 children on Pedro’s bus. How many more children are on Karen’s bus? Use the hundred chart to solve. Explanation:
Given Karen and Pedro each ride a bus home from school.
There are 46 children on Karen’s bus.
There are 24 children on Pedro’s bus.
More children are on Karen’s bus by using
the hundred chart to solve circled first
24 and started counting from 24 till to 46,
counted 22 more from 24 so 24 + 22 = 46,
therefore there are 22 more children on Karen’s bus.

Build Understanding

Question 1.
Zed picks 29 apples. He gives 15 apples to his aunt.
How many apples does Zed have? Solve the problem on a hundred chart.  A. On the hundred chart, circle the number of apples that Zed picks. Explanation:
On the hundred chart, circled the number of
apples 29 that Zed picks.

B. On the hundred chart, show how you would count by ones to find the number of apples Zed has. Explanation:
On the hundred chart, counted 15 back by ones,
and founf the number of apples Zed has 14.

C. Shade the number of apples Zed has. Explanation:
Shaded the 14 number of apples zed has.

D. Solve. 29 – 15 = ___14_____
Zed has ___14_____ apples now.
29-15 =14, Zed has 14 apples now,

Explanation:
Subtracted 15 from 29 got 14,
So Zed has 14 apples now.

Turn and Talk If Zed picks 12 more apples, how would you use the hundred chart to find the total number of apples he has? Explanation:
Given Zed has 29 apples and if Zed picks 12 more apples,
by using the hundred chart starting from 29 counting 12 more
we will get 41, therefore the total number of apples Zed has
29 +12 = 41.

Question 2.
Nick collects leaves for a science project. He collects 56 oak leaves and 23 maple leaves. How many leaves does he collect?   Explanation:

B. How can you use tens and ones to add the other number of leaves?
By counting,

Explanation:
By staring from 56 oak leaves and counting 20 tens and
3 ones more maple leaves so that 23 maples leaves are
counted more after 56.

C. Use the hundred chart to show the number of leaves Nick collects. Explanation:
Used the hundred chart and showed 56 + 23 = 79,
the number of leaves Nick collected.

Nick collects ____79___ leaves. Explanation:
Nick collects 56 + 23 79 leaves.

Turn and Talk How is adding on a hundred chart similar to and different from subtracting on a hundred chart?
Adding and subtracting both are counting,
different : one is counting front, other is back,

Explanation:
Adding on a hundred chart is simar to subtracting
both use counting only, different means in addition we
use counting forward  and in substraction we use
counting back.
Check Understanding

Use a hundred chart. Solve.

Question 1.
67 – 25 = ___42___ Explanation:
Using a hundred chart, solving 67 – 25,
first we circle 67 and counting back 25 we get
42 as shown in the chart.

Question 2.
52 + 35 = ___87______ Explanation:
Using a hundred chart, solving 52 + 35,
first we circle 52 and counting forward 35 we get
87 as shown in the chart.

Question 3.
____59____ = 48 + 11 Explanation:
Using a hundred chart, solving 48 + 11,
first we circle 48 and counting forward 11 we get
59 as shown in the chart.

Question 4.
96 – 74 = ___22__ Explanation:
Using a hundred chart, solving 96 – 74,
first we circle 96 and counting back 74 we get
22 as shown in the chart.

Question 5.
Reason There are 86 dinosaur toys. Mr. Lee sells 14 dinosaur toys.
How many dinosaur toys are there now? ___72_____ toys
Explain how to find the answer on the hundred chart. Explanation:
Given there are 86 dinosaur toys.
Mr. Lee sells 14 dinosaur toys. So number of
dinosaur toys are there now is by using the
hundred chart first we circle 86 and counting back
we move back by 14 numbers we get 72,
therefore there are 72 dinosaur toys now.

Use Tools Use a hundred chart. Solve.

Question 6.
43 + 35 = ___78__ Explanation:
Using a hundred chart, solving 43 + 35,
first we circle 43 and counting forward 35 we get
78 as shown in the chart.

Question 7.
23 – 17 = ____6____ Explanation:
Using a hundred chart, solving 23 – 17,
first we circle 23 and counting back 17 we get
6 as shown in the chart.

Question 8.
65 + 22 = ____87______ Explanation:
Using a hundred chart, solving 65 + 22,
first we circle 65 and counting forward 22 we get
87 as shown in the chart.

Question 9.
____40______ = 23 + 17 Explanation:
Using a hundred chart, solving 23 + 17,
first we circle 23 and counting forward 17 we get
40 as shown in the chart.

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