Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
14 + 10 = ______
7 × 10 = ______
63 − 10 = ______
14 + 20 = ______
76 + 10 = ______
13 + 10 = ______
65 + 20 = ______
75 − 10 = ______
79 + 10 = ______
2 × 10 = ______
40 + 10 = ______
36 − 10 = ______
79 − 10 = ______
94 − 10 = ______
20 + 20 = ______
84 − 10 = ______
25 + 20 = ______
63 + 20 = ______
9 × 10 = ______
59 − 10 = ______
