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
79 + 20 = ______
83 − 10 = ______
4 × 10 = ______
9 × 10 = ______
6 × 10 = ______
7 × 10 = ______
35 − 10 = ______
40 + 10 = ______
23 − 10 = ______
41 − 10 = ______
25 + 10 = ______
8 × 10 = ______
18 + 10 = ______
86 + 20 = ______
13 + 20 = ______
42 + 10 = ______
22 − 10 = ______
12 + 20 = ______
65 + 20 = ______
57 + 10 = ______
