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Level Two > Number and Algebra

Achievement Objectives:

Specific Learning Outcomes:

Solve addition and subtraction problems by using place value partitioning.

Description of mathematics:

Number Framework Stage 5

Required Resource Materials:
Ones and tens materials. E.g. BeaNZ, play money, sticks in bundles
Activity:

Using Materials

Problem: “Ray has \$34, and he gets \$25 for a birthday present. How much money does Ray have now?”
Record 34 + 25 on the board or modelling book. The students model 34 and 25 using the chosen materials and group the ones and tens.
Discuss the answer and record 34 + 25 = 59 on the board or modelling book.
Examples: Word stories and recording for: 45 + 22 52 + 13 42 + 25 35 + 43
53 + 25 43 + 22 ...

Using Imaging

Shielding and Imaging Only: Examples: Word stories and recording for: 14 + 43
31 + 25 23 + 41 24 + 25 32 + 26 38 + 21 13 + 41 25 + 23
44 + 24 ...

Using Number Properties

Examples: Word stories and recording for: 87 + 12 73 + 26 24 + 52 16 + 62
81 + 17 ...
Challenging examples: The students will need to understand the meaning of three-digit
numbers to do these: 241 + 21 342 + 44 643 + 21 27 + 210 303 + 44
25 + 510 ...

Multiplication Smorgasboard

Solve problems using a combination of addition, subtraction, multiplication and division mental strategies.

Solve multiplication and division problems by using place value.

Solve multiplication and division problems by using tidy numbers.

Saving Hundreds

Recall the number of tens and hundreds in 100s and 1000s.

Solve addition and subtraction problems by using place value partitioning.

How Many Tens And Hundreds?

Recall the number of tens and hundreds in 100s and 1000s.

Solve addition and subtraction problems by using place value partitioning.

Find out how many ones, tens, hundreds and thousands are in all of a whole number.

How many ten dollar notes?

Solve addition and subtraction problems by using place value.

Subtracting Tens

Solve addition and subtraction problems using groups of ten.

Solve addition and subtraction problems by using place value partitioning.