V. ADDITION AND SUBTRACTION OF WHOLE NUMBERS WITH ESTIMATION A. DIRECTIONS: Estimate for the sums or differences in the following equations. Write the letter of the best answer. ______ 1. 3 540 + 600 = n
a. 3 000
b. 4 000
c. 5 000
______ 2. 24 156 – 11 360 = n
a. 12 000
b. 13 000
c. 14 000
______ 3. 82 308 + 23 190 = n
a. 100 000 b. 110 000
c. 120 000
______ 4. 5 712 + 2 370 = n
a. 8 000
b. 9 000
c. 10 000
b. 90 000
c. 100 000
______ 5. 145 032 - 59 258 = n a. 80 000 B. PROBLEM SOLVING
1. James earns a monthly salary of Php8 000 working as a bank teller. He usually spends Php1 000 for rent, Php1 850 for food, Php800 for transportation and P700 for cellphone load and other expenses. He saves the rest of his money. How much does James save in a month?
2. Gabe and Cobbie are saving money to buy a Nintendo Wii, which costs Php17 500. On their birthday, they each received Php1 500 from Tita Marivi, Php1 000 from Lola, Php1 500 from Nangnang, Php1 000 from Tita Thea, Php500 from Tita Patchie and Php1 000 from Lola Norma. Their parents promised to pay for the rest of the Wii. How much money will their parents contribute for the Wii?
3. Jing went to the grocery and bought Php5 270 worth of goods. How much change will she get if she gives Php6 000?