Rounding Numbers Worksheet for 12-Year-Olds (Math & Science) — Nearest 10, 100, 1 & 2 Decimal Places

Free worksheet covering Math,Science for age 12 students. Created with Learning Corner's AI-powered tools.

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Instructions

Complete the exercises for both Math and Science. For the Math section, fill in the table by rounding each number as specified. For the Science section, answer the questions about the states of matter.

Math: Rounding Practice

Complete the table below by rounding each number to the specified place value.

Original Number Nearest 10 Nearest 100 1 Decimal Place 2 Decimal Places
3,486
2,947.2
0.0567
12.999

Science: States of Matter

Part 1: Matching
Match the state of matter with its correct description by writing the letter in the blank.

States of Matter
1. _____ Solid
2. _____ Liquid
3. _____ Gas 		Descriptions
A. Particles are far apart, move freely, and fill any container they are in.
B. Particles are packed tightly together and vibrate in a fixed position. It has a definite shape and volume.
C. Particles can slide past one another. It has a definite volume but takes the shape of its container.

Part 2: Phase Changes
Fill in the blank with the correct term for the phase change described.

  1. The process of a solid changing into a liquid is called _____________________.
  2. When a liquid changes into a gas, it is called _____________________.
  3. The change from a gas to a liquid is known as _____________________.
  4. When a liquid turns into a solid, the process is called _____________________.


Answer Key

Math: Rounding Practice

Original Number Nearest 10 Nearest 100 1 Decimal Place 2 Decimal Places
3,486 3,490 3,500 3,486.0 3,486.00
2,947.2 2,950 2,900 2,947.2 2,947.20
0.0567 0 0 0.1 0.06
12.999 10 0 13.0 13.00

Science: States of Matter

Part 1: Matching

1. B Solid
2. C Liquid
3. A Gas

Part 2: Phase Changes

  1. The process of a solid changing into a liquid is called melting.
  2. When a liquid changes into a gas, it is called evaporation (or boiling/vaporization).
  3. The change from a gas to a liquid is known as condensation.
  4. When a liquid turns into a solid, the process is called freezing (or solidification).
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