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
19 + 10 = ______
39 − 10 = ______
11 + 20 = ______
57 + 20 = ______
38 + 10 = ______
74 − 10 = ______
7 × 10 = ______
11 + 10 = ______
8 × 10 = ______
71 + 10 = ______
6 × 10 = ______
81 − 10 = ______
68 + 20 = ______
5 × 10 = ______
35 + 10 = ______
37 + 20 = ______
28 − 10 = ______
16 + 10 = ______
44 − 10 = ______
40 + 10 = ______
