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
97 − 10 = ______
8 × 10 = ______
28 + 20 = ______
36 − 10 = ______
41 + 20 = ______
67 − 10 = ______
23 + 10 = ______
49 + 10 = ______
86 − 10 = ______
24 − 10 = ______
1 × 10 = ______
20 + 20 = ______
44 + 10 = ______
89 + 20 = ______
90 − 10 = ______
48 − 10 = ______
46 + 20 = ______
55 + 10 = ______
4 × 10 = ______
26 − 10 = ______
