Decoder Slides TOP SECRET // AGENT IN TRAINING
MISSION: PV-03
DIGIT DECODERS
Mastering multi-digit place value and rounding to crack the ultimate number codes.
Lead Decoder: _________
SLIDE 01/06
MISSION 1: CRACK THE PLACE VALUE CODE
MISSION: PV-03
Every digit has a home. The position changes its power!
Thousands
4
Value: 4,000
Hundreds
7
Value: 700
Tens
2
Value: 20
Ones
9
Value: 9
Let's read this code together: Four thousand, seven hundred twenty-nine!
SLIDE 02/06
CHALLENGE 1: VALUE IDENTIFIER
MISSION: PV-03
TARGET CODE: 6,518
What is the value of the highlighted digit 5?
Think about its column! Is it in the Thousands, Hundreds, Tens, or Ones column?
A
5 Ones (Value = 5)
B
5 Tens (Value = 50)
C
5 Hundreds (Value = 500)
Explain your thinking: "Because the 5 is in the..."
SLIDE 03/06
MISSION 2: THE NUMBER LINE HACK
MISSION: PV-03
Rounding to the Nearest 10
Find which ten is closer! Let's round 37.
30
35
37
Closer to 40!
40
4 or less? Let it REST!
Round down (keep the smaller number).
5 or more? Let it SOAR!
Round up (climb to the larger number).
Is 37 past the middle? "Yes, 37 is past 35, so it rounds to..."
SLIDE 04/06
CHALLENGE 2: NEAREST HUNDRED
MISSION: PV-03
NEAREST HUNDRED ROUNDING
Round 638 to the nearest hundred.
Which two hundreds is 638 between?
600 and 700
The Rounding Hill
600
Peak: 650
638
700
638 hasn't reached the peak (650) yet!
A. 600
Correct! It rounds down.
B. 700
Incorrect. It is too far away.
Key Rule Check: "Since 38 is less than 50, we let 600 rest!"
SLIDE 05/06
DEBRIEFING: TRAINED DECODERS
MISSION: PV-03
Mission Briefing Completed!
You are now ready to tackle the physical Case Files. Keep these core training rules on your radar:
Spot the Position
Identify the home of the target digit (Thousands, Hundreds, Tens, or Ones).
Find the Middles
Look at the middle target (5 or 50) on your number lines to see which way to lean.
Write Clearly
Take your time writing numbers in the Case File worksheets. Numbers must be readable!
Up Next: Open Case File Worksheets!
SLIDE 06/06
Decoder Worksheets Bundle Classification: Educational Unit
CLASSIFIED CASE FILE
DIGIT DECODERS: PLACE VALUE
FILE NO: PV-03-A
STATUS: ACTIVE
Agent Name:
Date of Mission:
Agent ID Code:
AGENT DIRECTIVE: Look closely at the place value columns before writing your answers. Every position has a different power! Write clearly inside each white grid box.
SECTION A: CRACK THE CODE
Study the Place Value table, then answer the questions below.
THOUSANDS
5
HUNDREDS
2
TENS
8
ONES
4
1. Write the standard number shown in the chart above:
2. What is the value of the digit 2 in this number?
3. If we add 1 to the Hundreds column, what is our new total?
SECTION B: COMPARE SECURITY CODES
Compare the code levels. Write < , > , or = in the security badge!
4,312
4,132
(Check the Hundreds column!)
675
675
(Check every single column!)
8,901
9,012
(Check the Thousands column!)
DIGIT DECODERS INTERVENTION WORKBOOK PAGE 1 OF 2
Classification: Educational Unit
CLASSIFIED CASE FILE
DIGIT DECODERS: ROUNDING
FILE NO: PV-03-B
STATUS: ACTIVE
Agent Name: ____________________________________
Mission: PV-03-B
SECTION C: ROUND TO THE NEAREST 10
Locate the number on the scale. Is it closer to the smaller ten or the larger ten? Write your rounded number in the lock!
1. Round 43 to the nearest ten:
40
45
43
50
LOCKED IN
2. Round 76 to the nearest ten:
70
75
76
80
LOCKED IN
SECTION D: ROUND TO THE NEAREST 100
Remember the rule: If the tens digit is 5 or more , climb up! If it is 4 or less , slide down!
1. Round 281 to the nearest hundred:
Is 80 greater than or equal to 50?
2. Round 649 to the nearest hundred:
Is 49 greater than or equal to 50?
DIGIT DECODERS INTERVENTION WORKBOOK PAGE 2 OF 2
Decoder Task Cards STATION ACTIVITY CARDS
STATION MATERIALS
DIGIT DECODERS: SECRET TASK CARDS
UNIT: PV-03-TC
CUT ALONG DASHED LINES
Instructions: Print this sheet on cardstock, cut along the middle dashed lines, and place at learning stations.
CARD 01 // PLACE VALUE
THE POSITION DECODER
Look at this target security code:
7,842
Which place value column is the highlighted 4 sitting in?
Write value on Answer Sheet
CARD 02 // PLACE VALUE
THE VALUE CONVERTER
We need to calculate the raw power of this number:
5,129
What is the actual value of the highlighted 5 ? (Example: is it 5, 50, 500, or 5,000?)
Write value on Answer Sheet
CARD 03 // ROUNDING
TEN MILESTONE SCALE
Your drone has traveled 84 miles .
80
84
90
Is 84 closer to 80 or 90? Round 84 to the nearest ten!
Write value on Answer Sheet
CARD 04 // ROUNDING
THE ELEVATION PEAK
You are flying a copter at 476 feet .
476
Is 476 closer to 400 or 500? Round 476 to the nearest hundred!
Write value on Answer Sheet
DIGIT DECODERS INTERVENTION SERIES STATIONS SHEET 1
Decoder Exit Tickets Formative Assessment
MISSION DEBRIEF
EXIT TICKET: MISSION COMPLETE
FILE CODE: ET-PV-A
VERIFICATION CHECK
Agent Name: ____________________________
Date: __________________
1. PLACE VALUE CODE:
What is the value of the highlighted 7 in the code: 2,741 ?
2. ROUNDING HACK:
Round 58 to the nearest ten:
How do you feel about this mission?
[ ] Crushed It! [ ] Needs More Practice
CUT TICKET ALONG THIS DASHED LINE
MISSION DEBRIEF
EXIT TICKET: MISSION COMPLETE
FILE CODE: ET-PV-B
VERIFICATION CHECK
Agent Name: ____________________________
Date: __________________
1. PLACE VALUE CODE:
What is the value of the highlighted 7 in the code: 2,741 ?
2. ROUNDING HACK:
Round 58 to the nearest ten:
How do you feel about this mission?
[ ] Crushed It! [ ] Needs More Practice
