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
31 − 10 = ______
44 − 10 = ______
15 + 20 = ______
84 + 20 = ______
7 × 10 = ______
51 + 20 = ______
6 × 10 = ______
35 + 20 = ______
90 − 10 = ______
4 × 10 = ______
43 − 10 = ______
43 + 20 = ______
48 − 10 = ______
56 + 10 = ______
83 + 20 = ______
57 − 10 = ______
17 + 20 = ______
26 − 10 = ______
19 + 10 = ______
97 − 10 = ______
