Gr5 Math S2

Find the value of (1 + 3 + 5 + 7 + … + 99) – (2 + 4 + 6 + 8 + … + 98).

A pig gains 7 kg a month. If it weighs 27 kg in February this year, how heavy will it be on December this year?

Refer to the figure below. How many letter B are there?

AABBCCAABBCCAABBCCAABBCC… (there are 105 terms in this pattern)

Complete the pattern 71, 74, 80, 89, ___, 116.

Find the value of 67 + 81 + 77 + 45 + 33 + 19 + 23 – 45.

Two identical triangles were joined to form a square. If one side of the square is 6, what is the area of 1 triangle?

Mark wakes up from his sleep at 5:30 in the morning and starts his usual morning routine. He takes his bath for 30 minutes, changes his clothes for 10 minutes and eats his breakfast for 45 minutes. If the travel time from his home to school is 30 minutes, what time will he arrive at school?

Excluding the squares, how many rectangles are there in a 4 by 3 square grid?

Given aⴲb =3 x (a – b), find 2ⴲ1 + 3ⴲ2 + 4ⴲ3 + 5ⴲ4 + 6ⴲ5.

What is the positive difference between half the largest and twice the smallest number you can form from the digits 5,8,9,2?