﻿ Add Two 4-Digit Numbers 1 Year 4 Addition and Subtraction Learning Video Clip | Classroom Secrets
MathsYear 4Autumn Block 2 (Addition and Subtraction)02 Add Two 4-Digit Numbers 1 › Add Two 4-Digit Numbers 1 Year 4 Addition and Subtraction Learning Video Clip

# Add Two 4-Digit Numbers 1 Year 4 Addition and Subtraction Learning Video Clip ## Step 2: Add Two 4-Digit Numbers 1 Year 4 Place Value Learning Video Clip

Sebastian the explorer has been focusing on the plants and wildlife in different areas of the jungle. He needs to use his knowledge of adding two 4-digit numbers to develop his jungle research.

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1. What possible combinations could they have been?
Discuss what the possible values could be. Discuss which values will not change. Discuss the highest and lowest possible combinations. Discuss how many possible different combinations there are. This question is open-ended for the children to explore.
Various answers, for example: 3,245 + 3,352 = 6,597

2. Identify where the ladybirds should go to make the calculation correct.
Discuss the linear layout of the sum. Discuss how to work out the missing values. Discuss how the inverse can be used.
4,152 + 4,237 = 8,389

3. Using his data chart, identify how many bananas Sebastian expects the monkeys to eat in one month.
Discuss reading a place value chart.
2,313 + 2,121 = 4,434

4. How many will they eat in two months?
Discuss what information is necessary to calculate this. Discuss the different methods that could be used to calculate this. Discuss what doubling is.
4,434 + 4,434 = 8,868

5. Use the data to calculate which two species have been planted.
Discuss methods to use. Discuss how to be systematic and use estimation skills.
Kapok and rubber; 1,434 + 1,544 = 2,978

National Curriculum Objectives

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