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
88 + 20 = ______
2 × 10 = ______
63 − 10 = ______
98 − 10 = ______
5 × 10 = ______
8 × 10 = ______
81 + 10 = ______
75 + 20 = ______
32 − 10 = ______
62 + 10 = ______
69 + 10 = ______
42 − 10 = ______
7 × 10 = ______
36 + 20 = ______
66 + 20 = ______
49 − 10 = ______
23 − 10 = ______
39 + 10 = ______
74 + 20 = ______
45 + 10 = ______
