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
58 + 20 = ______
57 − 10 = ______
70 + 20 = ______
72 + 10 = ______
3 × 10 = ______
29 − 10 = ______
52 + 20 = ______
75 − 10 = ______
16 + 10 = ______
27 − 10 = ______
5 × 10 = ______
42 − 10 = ______
26 − 10 = ______
32 + 10 = ______
11 + 20 = ______
51 + 20 = ______
48 + 20 = ______
76 + 20 = ______
65 − 10 = ______
80 + 10 = ______
