Page 126 - New Medley 4 Semester 1

4. There was a party at Dolly’s house. She invited 1550 guests. However only
1279 guests came. How many guests did not come?

Th H T O

–

5. Fill in the blanks.

(a) 1242 + 2368 = + 1242 (b) 3051 + = 1058 + 3051

(c) 1435 + 0 = (d) + 0 = 3369

(e) 2452 – 0 = (f) – 0 = 4669

(g) 4647 – 4647 = (h) 9752 – = 0

6. Estimate sum by rounding to the nearest tens.

(a) Estimate 1244 + 2386 by rounding to the nearest tens.

Estimate: + =

(b) Estimate 5477 – 1649 by rounding to the nearest tens.

Estimate: – =

7. Estimate sum by rounding to the nearest hundreds.

(a) Estimate 3058 + 2321 by rounding to the nearest hundreds.

Estimate: + =

(b) Estimate 7645 – 2953 by rounding to the nearest hundreds.

Estimate: – =

Addition of 5- and 6-digit numbers

Addition is putting two numbers together. The numbers that we add are
called addends. The result of addition is called sum.

Now let us learn how to add any two 5-digit numbers without carrying.

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