Chapter 2 · Multiplying by a one-digit number

Unit Test 2

Hua's Classroom for Shanghai Maths — One Lesson One Exercise (English edition, pages 38–41).

Grade 3 First Semester Pages 38–41 ECNU Press

Lesson Alignment

Unit Test 2 reviews Chapter 2 — how the strands connect to standards and Eureka.

Learning Objectives

Students will be able to:

  1. 01Compute mental and written products across Chapter 2 types.
  2. 02Compare expressions and write number sentences from language.
  3. 03Solve multi-step application problems.
  4. 04Check reasonableness with estimation.

Common Core Standards

CodeStandard (focus for this lesson)
3.NBT.A.3× multiples of 10.
3.OA.A.3 / D.8Word problems; two-step.
3.OA.C.7Fluency.

Eureka Math Correspondence

Shanghai MathsFocusEureka Math
All Chapter 2× by one-digitG3 M3
ApplicationsMulti-stepG3 M1 / M3

Question–Lesson Map

Where each Unit Test 2 question was taught in Chapter 2 (Lessons 2.1–2.9).

Test questionFocusTaught in
1. Mental calculation Whole tens/hundreds × one-digit; two- and three-digit mental products; mixed × chains 2.1, 2.2, 2.4, 2.5, 2.6, 2.7, 2.8
2. Column method Written × for two- and three-digit × one-digit; regrouping; zeros in factors 2.4, 2.5, 2.6, 2.7, 2.8
3. Step by step Multi-step expressions with ×; friendly regrouping; distributive rewrites 2.4, 2.5, 2.6, 2.9
4. Compare Compare products with >, <, =; reason about nearby multiples 2.1, 2.2
5. Fill in the brackets Digit/place-value reasoning for products; estimate product size 2.4, 2.5, 2.6, 2.7, 2.8
6. Multiple choice Choose correct expression or estimate; interpret × stories 2.1, 2.2, 2.9
7. Number sentences Phrase → equation; unknown factor from quotient; product of equal addends 2.3, 2.9
8. Application problems Distance/speed, reading pages, flowers/groups, books/seats multi-step × stories 2.3, 2.9
9. Fill in the boxes Complete column × working; verify partial products 2.7, 2.8

Core Concepts

Unit Test 2 assesses Chapter 2 — multiplying by a one-digit number.

Fluency Checklist

  • Whole tens/hundreds × one-digit ($9 \times 30$, $800 \times 5$).
  • Two- and three-digit × one-digit; mixed $2 \times 30 + 3$.
  • Compare with $>$ $<$ $=$ ($27 \times 6$ vs $26 \times 7$, $250 \times 4$ vs $8 \times 125$).

Compare & Sentences

  • Unknown number from quotient (÷7 = 650 → ×7).
  • Product of two given factors; sum of equal addends then subtract.

Application Types

TypeThink
Distance / speedHours × km per hour (high-speed train)
Reading pagesPages/day × days + remaining
Flowers / groupsEqual groups from a diagram

Key Terms & Definitions (Reference)

Quick glossary for this lesson.

TermDefinition
Factor / productNumbers multiplied / result.
EstimateNearby product for checking.
Number sentenceEquation for a story.

Key Answers

Quick reference for this lesson’s exercise answers.

Key answers
  1. Mental: $270$; $4000$; $72$; $100$; $91$; $80$; $84$; $45$; $63$; $63$; $400$; $7$
  2. Column: $294$; $804$; $3360$; $2525$; $8991$; $10000$
  3. Step by step: $1518$; $1564$; $1986$; $1659$; $213$; $177$
  4. Compare: $<$; $<$; $=$; $>$; $>$; $=$
  5. Fill brackets: (1) $4$   (2) $3$- or $4$-digit   (3) $3$-digit; between $200$ and $250$   (4) $210$; $102$; $108$
  6. Multiple choice: (1) A ($2$)   (2) C ($38+29$)   (3) D (price of $20$ pens)
  7. Number sentences: (1) $4550$   (2) $530$   (3) $288$   (4) $1000$
  8. Applications: (1) $160$ flowers   (2) $78$ kg   (3) $654$ km   (4) $204$ pages   (5) $312$ books   (6) seats: yes; $1200$ tickets: no
  9. Fill boxes: $708×5=3540$; $190×4=760$