Mathematics
(Mix Counting)
8 4 9
7 5
849 - 75 + 16= . . .
Finish the
subtraction first.
9 - 5= 4
4
7
So, 849 - 75 + 16= 790
7
10 + 4= 14,
14 – 7= 7
7 7 4
1 6
0
9
7
The result of
subtraction is
addition by 16
1 + 7 + 1 = 9
4 + 6= 10
4 cannot be
subtracted by 7. So,
we borrow 1 tens
from number 8.
7 10 1
6 2 5
5 3
625 - 53 + 143= . . .
Finish the
subtraction first.
5 - 3= 2
2
7
So, 625 - 53 + 143= 715
5
10 + 2= 12,
12 – 5= 7
5 7 2
1 4 3
5
1
7
The result of
subtraction is
addition by 143
7 + 4 = 11
2 + 3= 5
2 cannot be
subtracted by 5. So,
we borrow 1 tens
from number 6.
5 10 1
1 + 5 + 1 = 7
Mr. Ronald had 120 eggs. He sold 54 eggs to
Mr. Faro. Then, Mr. Ronald’s hens laid 37
more eggs. How many eggs does Mr. Ronald
have now?
1 2 0
5 4
Finish the
subtraction first.
10 + 0= 10,
10 – 4 = 6
6
6
So, 120 - 54 + 37= 103
10 + 1= 11,
11 – 5= 6
6 6
3 7
3
0
1
The result of
subtraction is
addition by 37
1 + 6 + 3 = 10
6 + 7= 13
1 10 1
120 - 54 + 37= . .
0
10
1
Math, 27 agustus 2021
Math, 27 agustus 2021
Math, 27 agustus 2021
Math, 27 agustus 2021
Math, 27 agustus 2021

Math, 27 agustus 2021

  • 1.
  • 2.
    8 4 9 75 849 - 75 + 16= . . . Finish the subtraction first. 9 - 5= 4 4 7 So, 849 - 75 + 16= 790 7 10 + 4= 14, 14 – 7= 7 7 7 4 1 6 0 9 7 The result of subtraction is addition by 16 1 + 7 + 1 = 9 4 + 6= 10 4 cannot be subtracted by 7. So, we borrow 1 tens from number 8. 7 10 1
  • 3.
    6 2 5 53 625 - 53 + 143= . . . Finish the subtraction first. 5 - 3= 2 2 7 So, 625 - 53 + 143= 715 5 10 + 2= 12, 12 – 5= 7 5 7 2 1 4 3 5 1 7 The result of subtraction is addition by 143 7 + 4 = 11 2 + 3= 5 2 cannot be subtracted by 5. So, we borrow 1 tens from number 6. 5 10 1 1 + 5 + 1 = 7
  • 4.
    Mr. Ronald had120 eggs. He sold 54 eggs to Mr. Faro. Then, Mr. Ronald’s hens laid 37 more eggs. How many eggs does Mr. Ronald have now?
  • 5.
    1 2 0 54 Finish the subtraction first. 10 + 0= 10, 10 – 4 = 6 6 6 So, 120 - 54 + 37= 103 10 + 1= 11, 11 – 5= 6 6 6 3 7 3 0 1 The result of subtraction is addition by 37 1 + 6 + 3 = 10 6 + 7= 13 1 10 1 120 - 54 + 37= . . 0 10 1