Chapter 2 · Multiplying and dividing by two-digit numbers

Lesson 2.14 · Dividing multi-digit numbers by a two-digit number (2)

Hua's Classroom for Shanghai Maths — One Lesson One Exercise (English edition, pages 61–63).

Grade 3 Second Semester Pages 61–63 ECNU Press

Lesson Alignment

How this Shanghai Maths lesson connects to learning goals, Common Core, and Eureka Math.

Learning Objectives

Students will be able to:

  1. 01Calculate multi-step × and ÷ expressions. (Question 1)
  2. 02Use order of operations in combined sentences. (Question 2)
  3. 03Solve time-schedule (every n hours) problems. (Question 3–4)

Common Core Standards

CodeStandard (focus for this lesson)
3.OA.D.8Multi-step problems.
3.MD.A.1Time intervals.

Eureka Math Correspondence

Shanghai MathsFocusEureka Math
Mixed ops× then ÷G4 M3
ScheduleEvery 4 hoursG3 M7

Core Concepts

Mixed expressions; $84\times14\div49$; capsule every 4 hours.

Mixed Operations

$125 \times 32 \div 72$ — calculate left to right unless brackets group steps.

Order of Operations

“Product of 84 and 14, divided by 49” → $(84 \times 14) \div 49$.

Time Schedule

Capsule every 4 hours — count backwards from dose 11 to find start time.

Key Terms & Definitions (Reference)

Quick glossary for this lesson.

TermDefinition
IntervalEqual time between events.
Count backWork from last dose to first.

Key Answers

Quick reference for this lesson’s exercise answers.

1. Let’s try

  • $2000\div60=33\cdots20$;\; $2000\div24=83\cdots8$;\; $2000\div16=125$
  • $80\div12=6\cdots8$;\; $80\div22=3\cdots14$

2. Column method

  • $5000\div97=51\cdots53$;\; $5000\div78=64\cdots8$;\; $5000\div54=92\cdots32$
  • $5000\div48=104\cdots8$;\; $5000\div26=192\cdots8$;\; $5000\div13=384$

3. Step by step

  • $3806$;\; $580$;\; $1000$;\; $4000$;\; $1000$;\; $15800$

4. Number sentences

  1. $24$
  2. $61$
  3. $1$

5. Multiple choice

  1. A
  2. D

6. Application

  1. $8\,\text{pm}$ on the $15$th
  2. $5$ volleyballs