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
28 + 10 = ______
99 − 10 = ______
42 + 20 = ______
32 − 10 = ______
86 + 20 = ______
21 + 10 = ______
84 − 10 = ______
55 + 20 = ______
93 − 10 = ______
66 + 10 = ______
26 − 10 = ______
44 + 10 = ______
74 − 10 = ______
18 + 20 = ______
36 + 10 = ______
48 + 20 = ______
4 × 10 = ______
18 + 10 = ______
22 + 10 = ______
1 × 10 = ______
