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Problem 8 · The Ore Cart GraphPrint one blank worksheet now, download its PDF, or prepare a family or classroom packet.

Problem 8

The Ore Cart Graph

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The Ore Cart Graph

Complete to collectTumbled LapisLevel 2 · 3 Glints

In Minecraft, a mining crew records its ore in the picture graph. Each cart symbol stands for 4 ore blocks. After the graph was made, the crew moved one cart symbol’s worth of blocks from the iron pile to the gold pile.

Ore picture graph

OreCart symbols
Coal
Iron
Gold

Key:

After the move

Iron cart symbolsGold cart symbolsDifference in blocks

Your challenges

  1. How many ore blocks are represented by all three rows altogether?

  2. After the move, which pile has more blocks, iron or gold, and how many more does it have?

Show your answer

Update the iron and gold rows here. Use scratch paper for your graph-key equations as needed.

At a glance

About this problem

These tags show what the problem is about and the math you’ll use. Choose one to find similar problems.

Theme

Skills

Helpful first

Grade

Math area

Topics

Is this a good fit?

Before you choose this problem

A plain-language look at readiness, thinking, time, and the expected response.

Math readiness

Designed for Grade 3

Uses Late Grade 3 math.

Thinking

Standard challenge

The solver chooses and coordinates familiar methods.

Time & response

About 2.5–7 minutes

Light amount of written work · Short Explanation response.

How to support: Have the learner preserve the total while changing the iron and gold rows by one cart symbol.

How did it feel?

Pick the option that best matches this challenge. Recommendations use topic, math area, grade, story, and thinking challenge.

Keep exploring

Minecraft challenge 6 of 7

Technical reference

Rating, skills & curriculum

Designed for Grade 3 · Uses Late Grade 3 math · About 2.5–7 minutes

Grade 3 · Data, statistics, and probability · Operations and computation · Early data and displays · Multiplication and division · Addition and subtraction

MJ 3.7 · C2 · W1

Precise MJD coordinates, factor scores, skill weights, calibration evidence, and curriculum crosswalks. This reference is available to everyone and is intentionally last.

Content level

MJ 3.7

Grades 3–5

Grade 3 progression · point 7

Likely range
MJ 3.3–3.7
Confidence
92%

Challenge

C2 · Standard

The solver chooses and coordinates familiar methods.

  • Method selection1
  • Reasoning depth2
  • Novelty0
  • Constraint management1
  • Proof or justification1

Workload

W1 · Light

A short response with only a few steps.

Active time
2.5–7 minutes · typically 4
Response
Short Explanation
Known-method steps
7
  • Mechanical execution1
  • Written output1
  • Representation production1
  • Bookkeeping1

Learning focus

Skills this problem practices

What a successful response demonstrates, with each skill’s share of the content rating.

  • Draw and interpret scaled picture and bar graphs

    The learner can draw and interpret scaled picture and bar graphs. This capability is distinct from mere exposure to or isolated use of multiplication; category data.

    • Independent mastery
    • 60% focus
    • MJ 3.7 milestone

  • Interpret a product as equal groups or a rectangular array

    The learner can interpret a product as equal groups or a rectangular array. This capability is distinct from mere exposure to or isolated use of Grade 2 arrays.

    • Independent mastery
    • 20% focus
    • MJ 3.2 milestone

  • Solve one- and two-step addition/subtraction stories within 100

    The learner can solve one- and two-step addition/subtraction stories within 100. This capability is distinct from mere exposure to or isolated use of Grade 1 story structures.

    • Independent mastery
    • 20% focus
    • MJ 2.3 milestone

Readiness

Helpful prerequisites

Skills the rating assumes are already available to the learner.

  • Interpret a product as equal groups or a rectangular array

    The learner can interpret a product as equal groups or a rectangular array. This capability is distinct from mere exposure to or isolated use of Grade 2 arrays.

    • Independent readiness
    • Required
    • MJ 3.2 milestone

  • Solve one- and two-step addition/subtraction stories within 100

    The learner can solve one- and two-step addition/subtraction stories within 100. This capability is distinct from mere exposure to or isolated use of Grade 1 story structures.

    • Fluent readiness
    • Required
    • MJ 2.5 milestone

External alignment

Curriculum and standards crosswalks

Approved evidence-backed locations that support discovery. They do not define the MathJewels rating.

Bridges in Mathematicsthird-edition · 27 locations
Modules15 locations · Representative: Module 4: Adding & Subtracting to 20
Number Corner workouts12 locations · Representative: September: Calendar Grid
Common Core State Standards for Mathematics2010 · 3 locations
Standards3 locations · Representative: Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.