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
9 × 10 = ______
2 × 10 = ______
81 + 20 = ______
72 − 10 = ______
68 − 10 = ______
54 + 10 = ______
67 + 10 = ______
26 + 20 = ______
37 + 10 = ______
7 × 10 = ______
49 + 20 = ______
78 + 10 = ______
59 + 10 = ______
45 − 10 = ______
93 − 10 = ______
4 × 10 = ______
23 + 20 = ______
57 − 10 = ______
47 − 10 = ______
47 + 10 = ______
