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
11 + 20 = ______
61 + 20 = ______
70 + 10 = ______
1 × 10 = ______
44 − 10 = ______
55 − 10 = ______
22 + 20 = ______
65 + 20 = ______
94 − 10 = ______
7 × 10 = ______
55 + 20 = ______
88 + 10 = ______
36 − 10 = ______
23 + 20 = ______
25 − 10 = ______
69 − 10 = ______
51 − 10 = ______
75 + 20 = ______
74 − 10 = ______
83 + 20 = ______
