1. subtracting numbers without regrouping

SUBTRACTING NUMBERS WITHOUT

REGROUPING

8 - 5

3 - 2

9 - 7

6 - 2

5 - 3

10 - 6

4 - 0

7 - 4

Number of Trees Planted in Barangay Malinis

Trees Number Trees

Acacia 3 785Narra 2 554

Molave 432How many more acacia trees are

there than molave trees?

Which has more trees, acacia or molave?

How many trees more? What process are we going to use to find the answer?

What is the number sentence?

Which is the minuend? the subtrahend?

cube long flat

1 flat= 100 cubes 1 block= 1000 cubes

Thousands

Hundreds Tens Ones

•Represent 3 875 using cubes, longs, flats, and blocks. 3 blocks, 8 flats, 7 longs ans 5 cubes

•432 is the subtrahend. 4 flats, 3 longs and 2 cubes

So, 3 875-432= 3 443

GROUP WORK

Answer the following numbers using their blocks, flats, long and cubes. Then, put their answers in the place value pocket chart with the use of their number cards.

1.) 3 674 2.) 4 356 - 532 - 143

3. ) 5 243 4.) 6 532 - 112 - 321

5.) 8 547 - 217

Number Cards

o 4321

5 6 7 8 9

Place Value Pocket Chart

Th H T O

REMEMBER: In subtracting 3-digit numbers from 4-digit numbers, the digits must be aligned according to their place value. Thn, subtract the ones first, then the tens, the hundreds and the thousands.

SUBTRACT THE NUMBERS. THEN WRITE THE DIFFERENCE.

1.) 8 537 2.) 3 489 3.) 7 642 4.) 5 783

- 315 - 158 - 132 - 241

5.) 9 857 6.) 16 476 7.) 22 879

- 315 - 324 - 524

8.) 34 364 9.) 21 976 10.) 19 752 - 134 - 235 - 421

FIND WHAT NUMBER IS BEING ASKED.

1. What is the difference between 8 753 and 213?

2. What number is 320 less than 1 975?

3. Subtract 514 from 2 758.4. What is 6 788 less 351?5. What number is 502 less than 4

735?6. Take away 485 from 13 596.7. What is 24 359 minus 134?8. What is the difference between 523

and 21 785?

ASSIGNMENT:Do as indicated:

1. What is the difference between the largest 4-digit number without repetition and the smallest 3-digit number without repetition?

2. What is the difference between the largest 4-digit number with repetition and the smallest 3-digit number without repetition?

3. What is the difference between the largest 4-digit number with repetition and the largest 3-digit number with repetition?