The numbers 40, 19, 37, 33, 12, 25, 46, 18, 39, 21 are matched in pairs so that the sum of each pair is the same. Which number is paired with 39 ?

Grandpa had 400 dollars in his wallet. He gave half the money to his wife. From what was left, he then gave one-quarter to his son. Half of the remainder went to his grandson. How much money did his grandson receive ?

The numbers 1 to 6 are placed in the circles so that each side of the triangle has a sum of 10. If 1 is placed in the circle shown, which number is in the shaded circle ?

Simon has some 24 cm log strips. Each strip is made from a different number of equal-sized tiles

Simon took 1 tile from each strip to make a new strip. How long is the new strip ?

Rod had fewer than 100 blocks. When he made five equal rows, he had one block left over. With four equal rows, he had one block left over. With nine equal rows, there were no blocks left over. How many blocks did he have ?

A square piece of paper is folded alog the dashed lines shown and then the top is cut off.

The paper is then unfolded. Which shape shows the unfolded piece ?

Follow the instructions in this flow chart.

John wrote his name on his book. Martha said he wrote with a black pen. Aaron said it was a brown pencil. Frankie said it was a black crayon. If each of john’s friends were half right, what did he really use to write his name ?

To which square should I add a counter so that no two rows have the same number of counters, and no two columns have the same number of counters ?

When complete, each row, column and diagonal in this diagram has a sum of 15. What is the sum of the numbers in the shaded squares ?

The triangle shown is folded in half three times without unfolding, making another triangle each time.

Which figure shows what the triangle looks like when unfolded ?

Cianna is stringing beads for a necklace, starting with two round beads, then a square bead, and then repeating this pattern of three beads.

She finished her necklace with a round bead, which happens to be the 18^th round bead. How many square beads are on her necklace ?

Five swimmers were in a 50 m race. The time each swimmer took to finish the race is shown in this graph. Who won the race ?

How many 2 by 1 rectangles will fit exactly into an 8 by 7 rectangle ?

Which number do you need in the box to make this number sentence true ?