KA-0002●○○3 points, difficulty 1 of 33 ptLevel 3–4not yet calibratedAna adds up the first seven odd numbers: 1 + 3 + 5 + 7 + 9 + 11 + 13. Is her total odd or even, and what is it?NUM-03Parity of numbers (odd/even behavior)
KA-0006●○○3 points, difficulty 1 of 33 ptLevel 3–4has a figurenot yet calibratedOn the number line shown, the marks are equally spaced. What number does the arrow point to?NUM-13Number lines and betweennessalso MOD-09
KA-0055●○○3 points, difficulty 1 of 33 ptLevel 3–4not yet calibratedIn the number 4073, what is the value of the digit 7?NUM-01Place value and digit positions
KA-0057●○○3 points, difficulty 1 of 33 ptLevel 3–4not yet calibratedWhat is 1 + 2 + 3 + ... + 20?NUM-08Clever regrouping (pair to round numbers)also CNT-01
KA-0061●○○3 points, difficulty 1 of 33 ptLevel 3–4not yet calibratedEach shape stands for a whole number. A triangle plus a triangle plus a triangle is 12, and a triangle plus a square is 9. What is the square?NUM-14Operation puzzles and cryptarithmsalso LOG-08