Page 4 - 新思维数学活动用书2 样章

How to use this book

How to use this book

This workbook provides questions for you to practise what you

have learned in class. There is a unit to match each unit in

your Learner’s Book. Each exercise is divided into three parts:

• Focus: these questions help you to master the basics

• Practice: these questions help you to become more confident

in using what you have learned

• Challenge: these questions will make you think more deeply.

1
Numbers to 100
You might not need to work on all of them.
Your teacher will tell you which parts to do. 1.3 Comparing and ordering numbers

You will also find these features: 1 Estimate and show where 15, 43 and 78 are on this number line.
1.1 Numbers to 100 20 30 40 50 60 70 80 90 100

10
0
column digit
2 Draw a ring around the 3rd elephant.
place holder
Exercise 1.1
Important words that you will use. 1st representation row
Focus 3 Arun is last in a queue of 32 people.
Write the ordinal number for Arun’s place in the queue.
1 Write the missing numbers.
Step-by-step examples showing Worked example 4
A number sequence starts at 35.
1 Numbers to 100
a way to solve a problem. = It counts on in tens and stops at 65.
0
2
+
3
Challenge
What are the numbers in this sequence?
There are often many different 14 Arun marks two numbers on the number line.
Estimate and write Arun’s numbers in the boxes.
All the numbers have
0
ways to solve a problem. = 4 100 square to + 9 5 ones. They are all odd.
I used a
help me. 10 20 30 40 50 60 70 80 90 100
0
2 Write the missing numbers. 35, 45, 55, 65.
Answer: 35, 45, 55, 65.
15 Sofia and Zara join a queue to get tickets for the school disco.
There are 51 people in front of them.
21 25 A number sequence starts at 42. 30
What are Sofia and Zara’s positions in the queue?
4
and

These questions will help It counts on in tens and stops at 72.
16 Write a sequence of 5 numbers.
Write the numbers in the sequence.
Complete the sentences to describe your sequence.
51
you develop your skills of thinking 55 , , , 60
and working mathematically. Stop at at . . Count in . 21
17 Order these numbers from greatest to smallest.
82 48 84 28 42

3 3
24

6