Sensim Math · Depth 한국어

3-2 · Data Organization

Translate between table and pictograph

3.MD.B.3 · take · grade 3

Archetype: Read and Scale a Data Graph · step in a 21-type progression

▶ Practice — 8 problems

The apples harvested at the orchards in Gyeongho's town were surveyed and shown in a table and a pictograph. Complete the table and the pictograph.

Apples Harvested by Orchard (table)

Orchard Singsing Manna Dalkom Haengbok Total
Boxes harvested 780780 800800 30003000

Apples Harvested by Orchard (pictograph)

Orchard Amount
Singsing
Manna
Dalkom (6 large apple pictures, 9 small apple pictures)
Haengbok

In the pictograph, each large apple picture stands for 100100 boxes and each small apple picture stands for 1010 boxes.

Apples Harvested by Orchard (table) Orchard Singsing Manna Dalkom Haengbok Total Boxes harvested 780 800 3000 Apples Harvested by Orchard (pictograph) Orchard Amount Singsing Manna Dalkom Haengbok = 100 boxes = 10 boxes
Show solution

Understand

A table and a matching pictograph show apple boxes for four orchards. The table gives Singsing 780, Haengbok 800, and total 3000, with Manna and Dalkom blank. The pictograph's only filled row, Dalkom, shows 6 large apples (100 boxes each) and 9 small apples (10 boxes each). We complete the table, which means finding Dalkom and Manna.

Givens
  • Table: Singsing = 780, Haengbok = 800, Total = 3000.
  • Pictograph legend: 1 large apple = 100 boxes, 1 small apple = 10 boxes.
  • Dalkom row (from figure): 6 large apples and 9 small apples.
  • The table and pictograph show the same data.
Unknowns
  • Dalkom's number of boxes and Manna's number of boxes (to complete the table).
Constraints
  • The four orchard amounts must add to 3000.
  • Pictograph amounts come from the large/small apple values.

Plan

#15 Organize Information in More Ways · also uses: #7 Identify Subproblems

Translate the pictograph picture into a number (Dalkom), then treat 'find Manna' as the remaining subproblem using the total. This is moving between two representations of the same data.

Execute

#15 Organize Information in More Ways 3.MD.B.3
Dalkom shows 6 large apples and 9 small apples. Each large apple is 100 boxes, each small is 10 boxes: 6 x 100 = 600 and 9 x 10 = 90, so Dalkom = 600 + 90 = 690.
6×100+9×10=600+90=6906 \times 100 + 9 \times 10 = 600 + 90 = 690
Turning scaled picture symbols into a count is exactly what a scaled pictograph teaches in Grade 3.
#7 Identify Subproblems 3.NBT.A.2
The four orchards add to 3000. Subtract the three known amounts: 3000 - 780 - 690 - 800 = 730, so Manna = 730.
3000780690800=7303000 - 780 - 690 - 800 = 730
Subtracting the known parts from a known total within 1000 is Grade 3 place-value work.
#15 Organize Information in More Ways 3.MD.B.3
Convert each amount back into apples: Singsing 780 = 7 large + 8 small; Manna 730 = 7 large + 3 small; Dalkom 690 = 6 large + 9 small; Haengbok 800 = 8 large.
780=7100+810, 730=7100+310, 800=8100780{=}7{\cdot}100{+}8{\cdot}10,\ 730{=}7{\cdot}100{+}3{\cdot}10,\ 800{=}8{\cdot}100
Going from a number back to the right count of large and small symbols is the reverse of reading a pictograph.
Answer: Manna = 730 boxes, Dalkom = 690 boxes (Singsing 7 large + 8 small; Manna 7 large + 3 small; Dalkom 6 large + 9 small; Haengbok 8 large)

Review

Add all four: 780 + 730 + 690 + 800 = 3000, which matches the given total exactly, so the table is consistent.

Subproblem order can vary: first find Singsing+Haengbok+Dalkom = 2270, then Manna = 3000 - 2270 = 730 - same result.

Standards · min grade 3

  • 3.MD.B.3 Draw and interpret scaled picture graphs and bar graphs — Reading Dalkom from the scaled apple symbols and converting amounts back into symbols.
  • 3.NBT.A.2 Fluently add and subtract within 1000 — Subtracting the known amounts from 3000 to find Manna.
💡 Each big apple is 100 and each little apple is 10 - count them up, then the total fills in the rest!