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 + 20 = ______
68 + 10 = ______
26 + 20 = ______
31 − 10 = ______
32 + 10 = ______
79 + 20 = ______
52 − 10 = ______
9 × 10 = ______
89 − 10 = ______
36 + 20 = ______
43 + 10 = ______
72 − 10 = ______
34 + 20 = ______
55 − 10 = ______
48 + 20 = ______
67 + 10 = ______
30 + 20 = ______
92 − 10 = ______
64 + 20 = ______
74 + 10 = ______
