Subtract 1-Digit from 3-Digits Year 3 Addition and Subtraction Learning Video Clip

Subtract 1-Digit from 3-Digits Year 3 Addition and Subtraction Learning Video Clip

Step 4: Subtract 1-Digit from 3-Digits Year 3 Addition and Subtraction Learning Video Clip

Maintenance Mick needs to complete his jobs around the Conservation Park to make it better for the animals and the visitors. He needs help to make sure he has the right measurements for his materials.

More resources for Autumn Block 2 Step 4.

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Discussion points for teachers

1. How long is each plank of wood now?
Discuss method of finding the length of the cut planks of wood.
404 – 6 = 398cm

2. How long is the rope now?
Discuss the method of finding the length of the rope.
113 – 4 – 5 = 104m

3. How many saplings are left for Mick to plant?
Discuss why the boss may have asked Mick to get rid of some of the saplings. Could this be due to enclosure space? Is it because the trees need a certain amount of space when they are fully grown?
408 – 9 = 399 saplings

4. Help Mick to sort the notes correctly by matching the calculations to the correct answers.
Discuss which answers correlate with which question. Is there any other way that the calculations can be solved?
Plank 1: 705 – 8 = 697cm; Plank 2: 700 – 4 = 696cm;
Plank 3: 703 – 9 = 694cm; Plank 4: 701 – 8 = 693cm

5. Is he correct? Discuss the order of the calculations.
Discuss that two of the answers are the same and what this means for the order of the calculations. This question is open-ended for the children to explore.
Maintenance Mick is not correct. The correct order is:

Optional discussion points:
What other jobs might Maintenance Mick need to do in a Conservation Park? Why are these important jobs?

National Curriculum Objectives

Mathematics Year 3: (3C1) Add and subtract numbers mentally, including

three-digit number and ones

three-digit number and tens

three-digit number and hundreds

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