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
36 + 20 = ______
42 + 20 = ______
87 + 10 = ______
3 × 10 = ______
12 + 10 = ______
39 + 10 = ______
5 × 10 = ______
43 + 20 = ______
9 × 10 = ______
37 + 20 = ______
2 × 10 = ______
38 − 10 = ______
99 − 10 = ______
63 − 10 = ______
66 − 10 = ______
78 + 10 = ______
16 + 10 = ______
72 − 10 = ______
86 − 10 = ______
57 + 20 = ______
