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Addition and subtraction

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CONTENTS

ITEM TYPE NUMBER
Adding and subtracting Workout 40 slides
Addition and subtraction Library 20 questions
Once you have registered, you can work through the slides one by one. The workout comprises a series of sides that guide you systematically through the topic concept by concept, skill by skill. The slides may be used with or without the support of a tutor. The methodology is based on problem-solving that advances in logical succession by concept and difficulty. The student is presented with a problem or series of questions, and the next slide presents the fully-worked solution. To use the material you must sign-in or create an account. blacksacademy.net comprises a complete course in mathematics with resources that are comprehensive.

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SAMPLE FROM THE WORKOUT

Showing American English version

SLIDE 1 - QUESTION 1

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SLIDE 2 - SOLUTION

sample workout slide

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SAMPLE FROM THE LIBRARY

Showing American English version

QUESTION [difficulty 0.1]

sample workout slide

SOLUTION

sample workout slide

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DEPENDENCIES

START OF COURSE
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158: Addition and subtraction
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152: Starting number sequences

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CONCEPTS

ITEM
 LEV.
Number bond, sum two numbers to 10 300.1
Number bond, subtraction from 10 300.3
Addition by number bond, single digit from 10x 300.5
Subtraction by number bond, single digit from 10x 300.7
Number diagram 300.7
Construction of number diagram from numbers 300.9
Subtraction, single digit from 10x without diagram 301.1
Addition, double digit, less than 100 301.3
Number diagram, subtraction, double digit 301.5
Subtraction, double digit, single digit difference 301.7
Subtraction, number diagram, double digit difference 301.9
Subtraction, double digit difference without diagram 302.1
Subtraction, 3 digits, no diagram, small difference 302.3
Subtraction, 4 digits, no diagram, small difference 302.5
Subtraction,10x, double and three digit difference 302.7
Sequence, increments of 25 302.9
Subtraction, multiples of 25 303.1
Subtraction, mixed examples 303.3
Number diagram, 3 digits, large difference 303.5
Subtraction, 3 digits, no diagram, large difference 303.7

RAW CONTENT OF THE WORKOUT

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SLIDE 1 Fill in the missing numbers SLIDE 2 SLIDE 3 Fill in the missing numbers SLIDE 4 SLIDE 5 Example Work out . Method Answer 75 Using this method find the answers to the following. SLIDE 6 SLIDE 7 Example Work out Diagram Complete the following diagrams ? ? ? ? SLIDE 8 ? ? ? ? SLIDE 9 Example Make a diagram for each of the following, and find the answer. ? ? ? ? SLIDE 10 ? ? ? ? SLIDE 11 Example Find SLIDE 12 SLIDE 13 SLIDE 14 SLIDE 15 Example Find . Diagram. Draw diagrams for each of the following and solve the problem. ? ? ? ? SLIDE 16 ? ? ? ? SLIDE 17 Find ? ? ? ? ? SLIDE 18 Find ? ? ? ? ? SLIDE 19 Example Find Diagram Answer: Draw diagrams and find the answer for each of the following. ? ? ? ? SLIDE 20 ? ? ? ? SLIDE 21 Find ? ? ? ? ? SLIDE 22 ? ? ? ? ? SLIDE 23 ? ? ? ? ? SLIDE 24 ? ? ? ? ? SLIDE 25 ? ? ? ? ? SLIDE 26 ? ? ? ? ? SLIDE 27 ? ? ? ? ? SLIDE 28 ? ? ? ? ? SLIDE 29 Continue the following sequence SLIDE 30 SLIDE 31 ? ? ? ? ? SLIDE 32 ? ? ? ? ? SLIDE 33 ? ? ? ? ? SLIDE 34 ? ? ? ? ? SLIDE 35 Example Make diagrams for the following ? ? ? ? SLIDE 36 ? ? ? ? SLIDE 37 ? ? ? ? ? SLIDE 38 ? ? ? ? ? SLIDE 39 ? ? ? ? ? SLIDE 40 ? ? ? ? ?