Grade 2: Week 2, Activity Set 1

Grade 2: Week 2, Activity Set 1

Today we are going to practice adding 3-digit numbers using math tools you can find in the house. First, look for items to use as hundreds, tens, and ones. Then build each 3-digit number. Remember to bundle 10 when you can. Combine the ones, tens, and hundreds to find the sum! Be sure to check for accuracy.

Let’s Add! Combine 354 and 127. What is the sum?

● 354 has 3 hundreds, 5 tens, 4 ones ● 127 has 1 hundred, 2 tens, 7 ones ● Combine the ones. 7 + 4 = 11 so I will

bundle ten ones and move the ten to the ten’s place

● 1 one is left in the ones

● Combine all the tens. 5 tens + 2 tens + 1 ten = 8 tens

● Combine the hundreds. 3 hundreds + 1 hundred = 4 hundreds

● My sum is 481.

Now it is your turn to find the sums!

126 + 172 = ? 248 + 132 = ? 386 + 224 = ?

250 + 195 = ? 335 + 245 = ? 274 + 253 = ?

Week 2, Activity Set 1: Problem Solving

Let’s solve comparison story problems! 😊 In these problems, there are two things that are being compared, and our job is to either find the difference (ex: How many more or fewer) or to figure out the total using the clue that is given (ex: Jenny has 4 fewer than Ann).

● Ask yourself: What is being compared? Who has more? ● Make a model of the two things and put the info that we know into the model. ● If we are missing a part, we must subtract. If we are missing a total, we must

add!

Carter has 24 fewer action figures than Kyle. Carter has 56 action figures.

How many action figures does Kyle have?

56 + 24 = ?

I am comparing Carter’s total with Kyle’s total. I know that Carter has 24 fewer action figures and he has a total of 56.

I need to figure out Kyle’s total.

Carter gets the shorter bar because it says, “Carter has 24 fewer action figures than Kyle.”. If I know Carter has 24 fewer action figures than Kyle, I also know that Kyle has 24 more action figures than Carter.

I know Kyle’s amount equals Carter’s total plus 24 more.

For each problem, make a model and write an equation with a symbol for the unknown. Then solve. ☺

1. Emily and Lexi like making bracelets! Emily made 36 fewer bracelets than Lexi.

Emily made 47 bracelets. How many bracelets did Lexi make?

2. Casey and Tori are selling candy bars. Casey sold 42 candy bars. Casey sold 35

fewer candy bars than Tori. How many candy bars did Tori sell?

Week 2, Activity Set 2

Today we are going to practice subtracting 3-digit numbers using math tools for the hundreds, tens, and ones. Subtract 350 – 128. What is the difference?

350 has 0 ones

I need to subtract 8 ones.

I will decompose a ten.

I decomposed a ten into 10

ones. Now I am ready to

subtract the ones!

10 – 8 = ?

10 - 8 = 2

Now I am ready to subtract

the tens!

40 – 20 = ?

40 – 20 = 20

Now I am ready to subtract

the hundreds!

300 – 100 = ?

300 – 100 = 200

My answer is 222.

How can I check for accuracy?

I know part + part = total.

I can add 128 to 222 and it should = 350. So does 222 + 128 = 350? YES, the equation is balanced!

Now you can find your math tools to find the differences!

368 – 135 = ?

285 – 127 = ? 356 – 172 = ?

464 – 231 = ?

248 – 162 = ? 450 – 227 = ?


Today we are going to practice solving 2-step story problems again! Sometimes in a math story, two different actions happen. It helps to ask yourself:

● What is this story about?

● What is happening to the thing throughout the story – does the amount grow, shrink or both?

Dylan had 54 Twix bars. He gave 28 Twix bars to his sisters. Then Dylan’s mother bought 36 more Twix bars for Dylan because he was such a good brother! How many Twix bars does Dylan have now?

54 – 28 = ? (26) 26 + 36 = ?

54 – 28 + 36 = ?

There are 2 actions in the story. Dylan gave away Twix bars AND Dylan got more Twix bars.

First I need to find to find out how many Dylan has after he gave some away.

Then I need to find out how many he has after he got more.

For each problem, make a model and write an equation with a symbol for the unknown. Then solve. ☺

1. Debbie baked 36 cookies for a party. Debbie’s grandmother brought 25 more

cookies to the party. Debbie’s family ate 45 cookies.

How many cookies will Debbie have left?

2. Rahul had 49 baseball cards. Rahul gave 25 baseball cards to his friend.

Rahul’s father found 18 more baseball cards in his car. How many baseball cards

does Rahul have now?

Our new learning this week is all about measuring the length of objects in inches and centimeters. You may have a ruler in your house, if so, please use that one!

If you do not have a ruler, here is how you can make one:

Get a piece of cardboard to be the ruler. Choose two pieces of paper that are different colors (or just color one

part of the paper). To cut out inches, use an adult thumb as your guide. From the tip of

the thumb to the first bend is about an inch! To cut out centimeters, use the width of your pinkey finger, or a paper clip.

Glue your units with alternating colors. Label the ruler by writing the numbers to match how many units.

Inch ruler

Centimeter Ruler

We measure length using different units. Some examples of units are:

Inches

Feet

Centimeters

Yards


Today we are going to practice using an inch ruler to measure things to the closest inch. When you are measuring using a ruler, you need to be sure that the object is lined up with the zero of the ruler. Some rulers are made with the zero right on the edge of the ruler. Other rulers have a little empty space before the first line (which is the 0 line). Look at your ruler and make sure you see where the zero line is before using it!

With your ruler, draw a line that is 5 inches long.

Week 2, Activity Set 3: Review Practice

Solve each problem. The problems are mixed so pay attention to the operation signs.

28 + 57 = 94 – 56 =

70 – 23 = 45 + 39 =

19 + 62 = 51 – 22 =

If you have 1 quarter, 1 dime, 2 nickels and 4 pennies in your pocket, how much money do you have? Show your thinking. Use ₵ or $ in your answers.


Today we are going to practice using a centimeter ruler to measure things to the closest centimeter.

● Remember to line up the zero line of the ruler with the object that you are measuring!

With your ruler, draw a line that is 15 cm. long.


Use one of the place value strategies to add all four addends. Don’t forget to look in the ones place to find friendly numbers.

17 + 35 + 23 + 15 = ______

16 + 12 + 24 + 28 = ______

19 + 18 + 12 + 21 = ______

25 + 25 + 31 + 19 = ______

For each clock pictured, write the time in the box.

Answer Key: Second Grade Week 2

Week 2, Activity Set 1: Practice

126 + 172 = 298 248 + 132 = 380 386 + 224 = 610

250 + 195 = 445 335 + 245 = 580 274 + 253 = 527


Emily and Lexi like making bracelets! Emily made 36 fewer bracelets than Lexi. Emily made 47 bracelets. How many bracelets did Lexi make?

47 + 36 = ? 36 + 47 = ?

? - 47 = 36 ? - 36 = 47

Answer: Lexi had 83 bracelets

Casey and Taevian are selling candy bars. Casey sold 42 candy bars. Casey sold 35 fewer candy bars than Taevian. How many candy bars did Taevian sell?

42 + 35 = ? 35 + 42 = ?

? - 42 = 35 ? - 35 = 42

Answer: 77 candy bars


368 – 135 = 233

285 – 127 = 158 356 – 172 = 184

464 – 231 = 233

248 – 162 = 86 450 – 227 = 223


Debbie baked 36 cookies for a party. Debbie’s grandmother brought 25 more cookies to the party. Debbie’s family ate 45 cookies. How many cookies will Debbie have left?

36 + 25 = ? (61) 61 – 45 = ?

Or 36+25 – 45 = ?

Answer: 16 cookies

Rahul had 49 baseball cards. Rahul gave 25 baseball cards to his friend. Rahul’s father found 18 more baseball cards in his car. How many baseball cards does Rahul have now?

49 – 25 = ? (24)

24 + 18 = ?

Or 49 – 25 + 18 = ?

Answer: 42 baseball cards


**For these measurements, the answer key may be off due to images sometimes shrinking on the screen. Please check your child’s work for accuracy using the ruler that you have.

Bus = 2 inches Truck = 4 inches Car = 1 inch Bulldozer = 2 inch


28 + 57 = 85 94 – 56 = 38 70 – 23 =47 45 + 39 = 84 19 + 62 = 81 51 – 22 = 29

Money = 49 cents


**For these measurements, the answer key may be off due to images sometimes shrinking on the screen. Please check your child’s work for accuracy using the ruler that you have.

Pencil = 5 cm Pen = 8cm Crayon = 4 cm Marker = 10 cm


17 + 35 + 23 + 15 = 90 16 + 12 + 24 + 28 = 80 19 + 18 + 12 + 21 = 70 25 + 25 + 31 + 19 = 100

Time

3:25 1:10 11:50 8:55 6:20 12:35

Documents

Grade 2: Week 2, Activity Set 1