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
53 + 10 = ______
2 × 10 = ______
42 + 10 = ______
90 − 10 = ______
8 × 10 = ______
3 × 10 = ______
60 + 10 = ______
83 − 10 = ______
61 + 20 = ______
37 + 20 = ______
62 − 10 = ______
74 + 20 = ______
99 − 10 = ______
75 − 10 = ______
11 + 10 = ______
85 − 10 = ______
39 + 20 = ______
63 + 10 = ______
38 + 20 = ______
79 + 20 = ______
