This Math quiz is called 'Addition and Subtraction 7' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is an enjoyable way to learn if you are in the 3rd, 4th or 5th grade  aged 8 to 11.
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In this quiz you are going to get some practice in adding and subtracting hundreds.TIP: With numbers less than 1,000, add the hundreds first, then the tens and then the units. For example:














TIP: With numbers less than 1,000, add the hundreds first, then the tens and then the units. 123 + 56 + 684  3 = (100 + 600) + (20 + 50 + 80) + (3 + 6 + 4  3) = 700 + 150 + 10 = 860. You can repeat the procedure if you are having difficulty in doing it in your head

345 + 450  200 = (300 + 400  200) + (40 + 50) + (5) = 500 + 90 + 5 = 595


245 + 309  68 = (200 + 300) + (40  60) + (5 + 9  8) = 500  20 + 6 = 486

234  450 + 389 = (200  400 + 300) + (30  50 + 80) + (4 + 9) = 100 + 60 + 13 = 173


500 + 200 + 400  678 = (500 + 200 + 400  600)  (70)  (8) = 500  78 = 422. You can repeat the procedure if you are having difficulty in doing it in your head. Note: with negative numbers, the negative sign is kept with each part of the number, e.g.  678 is written as 600, 70, 8

238  78  45 + 167 = (200 + 100) + (30  70  40 + 60) + (8  8  5 + 7) = 300  20 + 2 = 282


400  389  400 + 567 = (500  300) + (60  80) + (7  9) = 200  20  2 = 178

789 + 567  968 = (700 + 500  900) + (80 + 60  60) + (9 + 7  8) = 300 + 80 + 8 = 388


234  68 + 2 + 13 = (200) + (30  60 + 10) + (4 + 2 + 3  8) = 200  20 + 1 = 181

400 + 323  23 = (400 + 300) + (20  20) + (3  3) = 700. Be on the LOOKOUT FOR SHORT CUTS: 323  23 = 300
