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
23 + 20 = ______
76 + 20 = ______
24 − 10 = ______
11 + 20 = ______
89 + 10 = ______
92 − 10 = ______
9 × 10 = ______
43 − 10 = ______
68 + 10 = ______
32 + 20 = ______
12 + 10 = ______
45 − 10 = ______
72 − 10 = ______
40 + 20 = ______
40 − 10 = ______
83 + 20 = ______
55 + 20 = ______
27 + 20 = ______
54 + 10 = ______
74 + 20 = ______
