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
27 + 20 = ______
41 − 10 = ______
2 × 10 = ______
68 − 10 = ______
17 + 10 = ______
31 + 10 = ______
38 + 20 = ______
9 × 10 = ______
61 − 10 = ______
7 × 10 = ______
8 × 10 = ______
29 + 20 = ______
3 × 10 = ______
39 − 10 = ______
44 − 10 = ______
90 − 10 = ______
71 + 10 = ______
25 − 10 = ______
93 − 10 = ______
34 + 20 = ______
