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
39 − 10 = ______
39 + 10 = ______
23 − 10 = ______
44 + 10 = ______
7 × 10 = ______
27 + 10 = ______
9 × 10 = ______
37 + 10 = ______
64 − 10 = ______
33 − 10 = ______
82 + 20 = ______
51 − 10 = ______
11 + 20 = ______
27 + 20 = ______
81 + 10 = ______
2 × 10 = ______
13 + 10 = ______
88 + 10 = ______
84 + 10 = ______
3 × 10 = ______
